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-   -   forced landing - THE FIELD CHOOSES YOU! (https://www.pprune.org/accidents-close-calls/564406-forced-landing-field-chooses-you.html)

mary meagher 11th Jul 2015 12:40

forced landing - THE FIELD CHOOSES YOU!
 
Piperboy in his thread about practicing forced landings on his home field, had problems, though familiar with the field.

Got me thinking about the big difference between landing out in a glider, and forced landing (real! when your engine struggles or quits altogether). In that case, IN A FORCED LANDING IN A SPAM CAN, THE FIELD CHOSES YOU!

Compare the glide ratio for the glider, probably 40 to one for a 15 meter average sort of glide; and the spam can, more like 12 to one. From say 1,500 feet, when the glider pilot has about 15 minutes to select a suitable farmer's pasture, usually no problem. But the spam can probably has less than five minutes. So whatever excuse for a field is below, plan to use that one, and set up a CONTROLLED APPROACH.

Anything will do if you and the plane are under control and do a well held off landing, avoiding wires, fences, single trees. Actually landing on tall crops or woods full of trees is OK if that's all you've got, as long as you land on the top of the crop (!) in a fully held off touchdown. Works for 8 foot maize, I've done that in a glider. Friend of mine landed his glider top of the woods in Wales, then did it again at Booker. Walked away both times. Gliding club suggested that next time he buy his own glider....

9 lives 12th Jul 2015 03:18

The field has chosen me four times, and happily, each time, I was able to fly it out when the problem was resolved. Two were EFATO's. The 12 to 1 for a power plane is optimistic, as some glide half that well. As Piperboy has well reminded us, practice!

John Farley has written that you pick the more near field, and make it, rather than pick the far one, and hope to make it. My personal preference would be to overshoot because of my mis judgement, rather that to undershoot. If I got it wrong, I'd rather go between two trees at the far end, at 10 MPH, than hit the embankment on the approach end at 60 MPH!

Routine rental flying does not lend itself to practicing forced approaches, particularly on the one or two flights a month, with the wife or kids, but you've got to practice....

mary meagher 12th Jul 2015 07:09

practice, practice....
 
Good point. Perhaps some power instructor reading this could explain how to arrange a useful exercise to train his students in forced landings....

In gliders it is a very important part of the training, often taken in the Falke motor glider. Almost too realistic, in my opinion, never really trusted the Falke as to me it seems so underpowered....but the experienced and qualified Falke instructor can ask the gliding student to select a field ten or fifteen times a session, and it sure felt real to me when I was the student suffering.

The equivalent exercise with a power instructor always seemed more like a joke. Pre-selected area (noise abatement must be respected!) pre-identified field, down to 300 feet, and away we go, exercise complete. I don't think so.

papabravowhiskey 12th Jul 2015 09:46

Making the more near field work ...
 

Originally Posted by Step Turn (Post 9043215)
John Farley has written that you pick the more near field, and make it, rather than pick the far one, and hope to make it.

However you can take this a little too far. Many moons ago I helped to retrieve someone who had "run out of height" and landed out a lonnnnng way from base in one of those places only accessible via 25 miles of twisty single track road. To digress, I have to say that one of the things that I learned from my brief stint at gliding was that there are FAR more places in the UK like that than I had ever imagined.

As we approached the chosen field, we noted that there were a lot of large flat fields all around, unencumbered by glider-eating features. Then we saw it: a small hill, with a small field going up it. No! Really? He'd rejected all the nice big fields with standing crops, and the nice big fields with low crops, all of which had nice low boundaries and a complete absence of power lines. Instead he'd gone for the tiny one one which went up the hill, with power lines on one side, telephone cables on another, tall trees on a third, an electric fence down the middle and, yes, you guessed it, sheep on one side of the fence and cows on the other. Said cows had by now cleaned the flies off the leading edge and were now busy licking the gel coat off. Glider and pilot were otherwise intact. So at least he'd "made the nearby field work".

The one advantage of this field was that the "road" (by now a glorified farm track) went down one side (hence the telephone poles) which meant that we could get the car an trailer to a mere 150 yards from the glider. No chance of getting into the field with the car, however: the glider was waaaay up in the top corner; the access into the field was too steep and muddy to contemplate driving the car in.

So we trudged across the field, carefully avoiding the large quantities of fresh cow pats. On arrival we noted that the glider hadn't dodged the cow pats quite so well, and the underside and rear were liberally spattered with particularly fresh cow pat contents.

Disassembly was achieved with the usual "ease", aided by liberal clouts on the wing taper pins and the usual yelps of pain. Then we had to carry the bits down to the trailer, only remembering which order things needed to go into the trailer AFTER we arrived with the second bit and realising that we needed to take out the first bit that we'd put in. Of course the cows were not helping at all, and by now the sheep were trying to get in on the act, so it really shouldn't have been a surprise when the hapless pilot slipped on a particularly warm, wet and fresh cow pat into a veritable pool of brown and smelly stuff whilst encumbered with the heavy end of the wing (I'm not stupid!) and simultaneously fending off a particularly inquisitive bovine.

At this point we consoled ourselves that, following the usual rules, (you land out: you provide the retrieve vehicle) it was HIS car that we'd dragged the trailer with, and so it was HIS seats that he was going to ... er ... foul up.

The drive back was uneventful, if silent, and was conducted with all windows open and fan on FULL ...

PBW

Pace 12th Jul 2015 13:14

I appreciate landing away is the norm with glider pilots and they are much more experienced at doing so than the powered pilots.

Also the nature of the animal is different.

Having said that the biggest danger to powered pilots is fixating on a chosen landing strip and going for that strip at all costs.

often there is a suitable landing strip left or right of track which might not be totally into wind or length but a better option than stalling or taking out a line of trees in front of the chosen landing strip.

it is better to hit a hedge at the end than stalling in out of control or descending into trees because you got it wrong on your chosen landing strip.

it is so important to have a good situational awareness and a number of get out of jail for free cards in the back of your mind than fixation

Pace

Pilot DAR 12th Jul 2015 13:41

About one in four actual landings for me will be a practice forced approach, just because I can. Even a busy towered airport will sometime allow it, as I did yesterday at a Toronto area airport, by asking for a slant base to final, while still quite high.

At my home runway, I have a distinct reference point 200 feet from the threshold, and that's my aiming point, sometimes from overhead. It keeps me sharp. I've been flying a friend's 172 taildragger, with all kinds of wing mods - it won't come down! I've been practicing in it, as I'm having to change my reference to where I'm going, or it will way overshoot.

On the obverse, while practicing and training my friend in the 182 amphibian, at 3350 gross weight, I found that the glide area was alarmingly small. It's kinda like a helicopter autorotation, look above your toes on the pedals, 'cause that's about where' you're going! Make a good job of that, rather than a very poor job what what you think should work.

Practice in the different types you fly, they glide differently....

Above The Clouds 12th Jul 2015 13:51

Personally once I have chosen the landing area I use the constant aspect approach technique, it works well in various types I have tried it in both for practice glide approaches and one real engine failure with an off airfield landing.

DeltaV 12th Jul 2015 19:35


The equivalent exercise with a power instructor always seemed more like a joke. Pre-selected area (noise abatement must be respected!) pre-identified field, down to 300 feet, and away we go, exercise complete. I don't think so.
I'm with you on that one Mary, but add to that my pet hate. I've picked the field, it's doable, the glide is shaping up nicely then the instructor opens the throttle 'to avoid shock cooling the engine' thus blowing the approach right there. Thanks a bunch, Dick.

What is it with this shock cooling sh*t anyway? We weren't at full bore when you pulled the mixture. You're probably not going to throw a PFL at me over really difficult terrain where we're really going to need every ounce of horsemeat we've got to get out over the trees or whatever. Hell, we're not even going to get low enough for the trees to be an issue in the first place, and is our two seater training hack so gutless it can't manage to level off and maybe even climb gently without ramming it straight to wide open?

I fly a motorglider. I can shut it down in flight and restart it again and when I do that I run at lowest sustain throttle setting to let it warm up relatively gently.

On landing while usually the engine is not quiet and cold I do tend to close the throttle on the downwind then not touch it again until I have to taxi clear so in that sense every landing for me is a PFL.

[edit] I also agree with Above The Clouds about use of the constant aspect approach.

Maoraigh1 12th Jul 2015 19:57

I practice steep approaches from assorted positions, power off, to land when I have a grass airfield with no other traffic. But some instructors insist a circuit must be flown, even at the risk of losing sight of the field, for a pfl.

9 lives 12th Jul 2015 20:15

Delta V, I've posted a comment about shock cooling here: http://www.pprune.org/private-flying...ml#post9044009

Genghis the Engineer 12th Jul 2015 21:47

Whilst I accept that the beats method is legitimate, I'm also a firm advocate of the CA method - I practice at least one a month, and teach that method.

One thing I have noticed, teaching it, is the number of students who will fly according to their perception of adherence to rule 5 (the UK low flying rules - min 500ft separation from people, vehicles or structures).

I lose track of the number of times I've said "if you are flying with me, it's my licence - if you have a real engine failure, it doesn't matter. So stop thinking about rule 5 and just fly to the field".


I do not however subscribe to the view in the title of this thread. I choose the field, I make suire I fly to it, and I am in command of the aircraft. The field is not in command of the aircraft, nor is fate.

Which takes me to what, in my opinion, is the single largest failing I see in pilots I am coaching (I won't say teaching in this context, as as a CRI I'm flying with people who are supposed to know this already - although I often doubt this) PFLs. It is students who trust to either me, or to fate. So they'll continue in a straight line hoping that the field they want will magically swim into view, or take less than they could in ensuring that the aeroplane is where it needs to be for a good field. Whilst I've never had anybody say it, there is often an air of affrontery - people who deep down think that I was not playing fair in failing to ensure that there would be a nice big into wind field there for them in clear sight. Is that what other instructors are doing?

G

India Four Two 12th Jul 2015 23:01

I had a particularly good training in forced landings and EFATOs when I flew Chipmunks in a UAS. Since then, due to my peripatetic life-style, I haven't accumulated many hours, but have had many dual-checkouts in various parts of the world and as a consequence, done many practice forced landings.

On several occasions, due to my unfamiliarity with the gliding characteristics of the type I was flying, I've had to say to the instructor "I'm not going to make the field I chose, so I'm going for THAT one instead."

Genghis the Engineer 12th Jul 2015 23:26

Yes where does that come from.

What matters is a setup for a good field. It's not a game of "tell your instructor the field at 2000ft, then make sure that's the field you set up for".

G

9 lives 13th Jul 2015 02:53

I hold the opinion that the most important practice is the power off to the ground. Applying the power at 300 feet, and saying that you could have made it is really cheating yourself out of the most important part of the practice.

When I'm training, I would much rather the pilot pick a close field, and get it down, than to bob around searching for optimum glide characteristics. Yes, if you're off shore, or over the city, making the glide stretch to the next suitable landing area is important. But, a lot of our flying affords us reasonable choices nearer - make the most out of those.

This is when you add 10 knots for the wife and kids, and maintain your inertia down final, you'll be happy to have it when you begin to flare. This is what the overshoots miss - transition from glide to actual flare and land. If you arrive to the top of the flare power off with landing flap, and at the "best" glide speed, you're going to have to time your flare really well. It's fine if you're practiced at it, but if you're not, that extra inertia will come in really handy. You can slip it off, if you have too much as you cross the fence - but you're going to loose it in a hurry anyway.

If your flight manual suggests an after takeoff speed, this is the speed you're looking for for the final segment of the glide to a power off landing. It's probably around Vy. This faster speed provides the inertia you need to flare and land. It's easier to find the close field, and not be distracted, for a good landing from the faster approach speed...

Big Pistons Forever 13th Jul 2015 02:55

I have said this before but I am going to say it again. 80 % of engine failures are caused by the actions or in actions of the pilot. The best situation is to not have to choose a field because you did not let the engine fail in the first place or if it did fail you were able to recover power by use of an effective and fast engine failure cause check.

For instructors: Before your students get to fly a practice PFL they should have to master the initial vital actions, including be able to quickly establish a stable and trimmed gliding attitude and can with out prompting or faffing about perform the engine failure cause check.

I think this fixation with flying the perfect forced approach is partly rooted in an unstated rather prevalent "hero pilot syndrome". In that most pilots want to be the guy the others talk about at the club bar. "Oh blogs there had an engine explode on him with no warning. He coolly squeezed the machine into this tiny field with no damage at all !".

Instructors need to beat this fantasy out of the students head. Safe flying comes with proactively identifying and eliminating those boring and unsexy things that history has shown cause the majority of engine failures like carb ice and fuel exhaustion/mismanagement/contamination, and practice the checks that will restore power if performed quickly and properly. Then yes they need to know how to fly the aircraft to a controlled touchdown at a chosen spot. Mary, the OP IMO nailed the field selection criteria.

Pace 13th Jul 2015 07:58

The one point we are all missing here is practice FLs and real ones. In practice we can chop the throttle at 2000 feet 1500 feet 1000 feet reality is that the cruise is the least likely time you will loose an engine.

More likely in the climb out at 200 feet 400 feet 600 feet where your time is very limited for looking at causes. As BPF states most are pilot mismanagement or not complete loss of the engine.

"tell your instructor the field at 2000ft, then make sure that's the field you set up for".
I WISH Engine failures were all at 2000 feet ;) plenty of time !run through engine checks, set up the glide ,fly a pattern onto the chosen one and bingo but sadly reality is not like that.

Hence why its vital to be decisive and flexible in your thinking and actions and be ready to change if the situation changes.

You may restart if you have altitude, you may keep the engine running and decide to make it back then find it stops and you are faced with a new set of circumstances.

You may select a field and get it wrong do you have a plan B or C in mind and are ready to change that.
There are so many variables and a certain amount of luck too in a real engine failure and a successful outcome.

One pilot picked a field landed short wrecked the aircraft and sustained minor injuries on his left was an even better field which after the crash he said he discounted because it wasn't into wind. He could have turned into it but didn't (( Hindsight is a great thing BUT?

Most of all keep it flying or for almost certain you will end up dying if you don't

pace

Pilot DAR 13th Jul 2015 10:16

Prevention of the circumstances which could arise to cause a forced approach is important, but, like stall and spin recovery, ultimately the skill must be there to land a plane without power. This thread presupposes that you're up, you're going down, and you must get it right. The reason for this undesirable situation is worthy of many planning and prevention discussions - but right now, you're gliding....

There comes a point when you can't give power restoration your priority attention, you have to plan to get on the ground safely. For most pilots, that task could take all of the attention.

Selection of a suitable field is an important skill. If you can't make it to the field you started toward, at least you waste good gliding opportunity, if not fail completely. If you're right on top of the only practical place, you're going to have to get to an approach end before you can land on it, and that will involve some altitude costly turns.

And then there's just awareness of your choices to begin with. I was once mentoring a new pilot in his Tomahawk. I selected the perfect field, a nice grass runway, on his side, pulled the power, announcing "forced approach". He chose and set up for a pretty, but very small sod farm. I told him this would be a full stop landing forced approach. He told me that we would have a heck of a time taking off from his selected landing site. I hmmm'd a little to use up a bit of his gliding time, and then told him that we'd have no problem taking off from that nice runway over there. He completely re-setup his approach, and we made it fine. He did not look around enough, before committing, and I had left him lots of time. Tunnel vision.

Pace 13th Jul 2015 11:42

The other presumption from Standard PFLs is that we are on a CAVOK day with great visibility where we can see potential landing sites for miles around and can see our pattern onto that field?

Reality maybe that we are in poor visibility in rain and maybe even chopping through bits of scud cloud on our way down loosing sight of our chosen landing spot.

Yes Piston singles fly on crap days too and in IMC conditions engine failures are not limited to 2000 feet on CAVOK days even more important that the pilot can think and react quickly.

It maybe in those situations that you change your game plan fly over head the landing spot and do a semi IFR VMC procedure like a teardrop back onto final

Flexibility, spatial awareness and creativity and speed/energy management are the keywords

Pace

Pace 13th Jul 2015 18:47

https://www.youtube.com/watch?v=qww_LrMoUY4

This is amazing footage of what is supposed to be a forced landing after loss of power. How this pilot walked away ? How to do every thing wrong ? Loss of power my guess pilot induced too. Pretty horrible to watch

Pace

keni010 13th Jul 2015 20:04

forced landing
 
Unbelievable and have seen it before, how he didn't see that perfect field dead ahead of him I'll never understand! As for the reasons for the lack of power......if that's true that he hadn't the throttle pushed home then ..........lost for words!

mary meagher 13th Jul 2015 20:25

Yes....BUT he walked away from that tree arrival because his aircraft was under control! No point in belabouring all his stupid mistakes, he got the important one right.

EFATO? steep turn back to the tarmac, nose a tad high...surprise! you got the important one wrong. End of your story.

Pace 13th Jul 2015 20:26

it demonstrates one thing that even in a glide you are master of where the aircraft goes! Why choose trees when as you said there was a field and even a motorway to the right anywhere but those trees which this pilot CHOSE to land in by allowing himself to be a passenger to what could have been a fatal event.

The only reason the pilot got away with it was the right wing took the brunt of the collision with the tree the fuselage impacting a much softer section another six feet to the right and the pilot probably would have been killed and was incredibly lucky.
Yes Mary I agree the most important thing was to keep it flying but even there I am not sure the speed was controlled as the aircraft seemed fast in a descent which kept it flying more than any planned inputs from this pilot (( who didn't seem to be controlling anything

addendum

Looking more closely at the pilots line of sight I do now think he was looking at that wide road to land on but went through the centreline and didn't have enough height to get back onto the motorway while on a continuous descent into the trees very lucky guy. But that is the point realising that things were not working on plan A the pilot should have been already aware of the field on the left as plan B and gone for that when plan A was no longer working.
The motorway would have worked if he had made a steeper bank while pushing the nose over and landed on the side with the traffic flow rather than against it

a good example of fixating on one point while being oblivious to other options

Pace

9 lives 14th Jul 2015 01:10

Well... today I chose the fields - both runways. After an hour of practice auto rotations in the helicopter onto one, I sure had trouble getting the practice forced approaches right in the plane onto the other! I kept landing long! It just shows the value of practice!

Big Pistons Forever 14th Jul 2015 02:00


Originally Posted by mary meagher (Post 9045331)
Yes....BUT he walked away from that tree arrival because his aircraft was under control! No point in belabouring all his stupid mistakes, he got the important one right.

EFATO? steep turn back to the tarmac, nose a tad high...surprise! you got the important one wrong. End of your story.

What she said :ok:

One of the problems with flight training is that a lot of the exercises are not evidence based, just a result of myths, historical prejudice and flight school isms mindlessly passed down through the years.

The whole forced approached exercise as taught by flight school is a particularly egregious example of this in that

- The fact that the majority of engine failures are caused by the pilot is not represented anywhere in the training

- The fact that a partial engine failure is more likely to occur than a total engine failure bit this scenario is almost never discussed let alone practiced

- And with particular reference to this thread, despite the emphasis placed on field selection in flight training the accident statistics clearly show that the fatal accident are almost never about choosing the "wrong" field they are due to either loosing control of the airplane while maneuvering to a field usually resulting in the stall/spin/die trifecta, or they totally miss the field and hit a solid object at flying speed while still well above the earth.

Yes not causing the engine to stop and if it does get it going again is very important, but as Step and others pointed out judging the glide so that the airplane arrives at the desired spot is what really matters if the engine becomes un-interested in further toil.

The good news is you don't have to do PFL's to get good at judging the gliding flight path, you just have to, when practicable, close the throttle on a regular landing at various parts of the circuit. That plus regular inflight review of the immediate vital actions in the event of engine failures and paying attention to the preventable engine failure causes will be all the preparation you need :)

DeltaV 14th Jul 2015 05:21


Step Turn

Delta V, I've posted a comment about shock cooling here: "NJK blew a jug today"
Fair enough but I'd contend there is a world of difference between a PFL as commonly conducted by flight instructors (the ones in my experience anyway) and the business of glider tugging.

On one of my more recent biannual rides I grumbled about this to the instructor and he, in good part, opted for the course of action proposed by BPF;

The good news is you don't have to do PFL's to get good at judging the gliding flight path, you just have to, when practicable, close the throttle on a regular landing at various parts of the circuit.
I was given a particular, quite restricted, section of the runway to arrive on, told that when, at circuit height, I judged I could make that, to close the throttle and to not touch it again until we were on the ground. I didn't miss.

I'd like to make one last observation on all of this and it has to do with how the circuit is flown. I see many fly long final approaches which gives very little latitude for adjustment should the need arise. Tighter, squarer circuits seem to me to be inherently more adjustable to allow for contingencies on the way down. This was clearly illustrated to me some years ago at a timed-circuit-spot-landing competition at a local field. Those who flew long rectangular circuits may have made the line but never came close to making the time. The squarer circuit could be tightened or relaxed on downwind to hit both time and line targets simultaneously.

Genghis the Engineer 14th Jul 2015 06:12

Regarding Pace's video (posted by Pace, I'm not holding him responsible for it).

IF that was a genuine first solo...

(1)The instructor should not have allowed the student to be fitting cameras for a first solo.

(2) The instructor should have ensured far better training about field selection and handling a power failure.


Personally, whatever else it is, I don't think it's a first solo. But I agree completely with Pace that it's an example of very poor aircraft management.



DeltaV - it's a compromise isn't it. A long enough "final" to stabilise the aircraft, and enough of a turn, and a close enough turn, to allow adjustment. Not squarer however. Much easier with the military style constant aspect circuit than the civilian rectangular ones.

G

DeltaV 14th Jul 2015 06:55


...it's a compromise isn't it. A long enough "final" to stabilise the aircraft, and enough of a turn, and a close enough turn, to allow adjustment. Not squarer however. Much easier with the military style constant aspect circuit than the civilian rectangular ones.
Yes, of course. I like and use the constant aspect approach but I used 'squarer' to differentiate from the more usual, distinctly rectangular one which, it seems to me, overly relies on having power to adjust the path. Not necessarily available in a forced landing situation.

mary meagher 14th Jul 2015 07:19

Long rectangular circuits/patterns are for the convenience of power traffic sequencing, and so ATC can see or be told who is where and what is planned.

Gliders in the UK no longer stick to long rectangular circuits, if not sharing traffic patterns with power aircraft. We fly downwind to assess the situation, and then CUT THE CORNER. This is called the diagonal leg. The base leg hardly exists at all. The RAF has used this for years and it is called by you chaps the constant aspect approach. You never loose sight of the landing area. You never loose situation awareness.

In America gliders usually have to share patterns with power traffic, and so must fly that long downwind, 90 degree turn onto base, 90 degree turn onto final. Works fine unless the donkey declines to cooperate, in which case you inform the traffic and cut the corner anyway.

Genghis the Engineer 14th Jul 2015 09:30

Personally I'd love to see the whole world go over to a 6 minute CA circuit - and when I'm on my own at a farmstrip, it's what I fly.

Won't happen, but I can dream.

G

Above The Clouds 14th Jul 2015 09:48


Genghis the Engineer
Personally I'd love to see the whole world go over to a 6 minute CA circuit
I could not agree more, the sooner those cross country size circuits are banned the better.

Pace 17th Jul 2015 12:34

In my eyes the detail or who should have been here or there etc is irrelevant
This incident highlights the problems of having multiple settings which can only add to confusion and the option for a mistake to be made.

That is why we should all move to using a standard QNH and stop clinging on to archaic habits from the past which aviation is great at doing.

Less options less options for a mistake and there should only be two settings QNH and FLs I would also go for a uniform transition ALT/level like they do in the USA

Pace

Piltdown Man 11th Oct 2015 07:51

The single engine and glider options the same it is just that the "powered" pilots have a few more obstacles in their path to a successful outcome. The first is the drag of your average spam can. The next is its speed. Then the weight and lastly pilot training and accepted technique.

Let's rip into the last one's first. Power pilots generally fly too fast. Their 65 for everything is wrong. It is especially unhelpful for a forced landing. Get the speeds right and then you'll have better glide and a shorter stopping distance. Next we have the things that are not taught as standard and these include low level "S" turns and side-slips. These convenient additions to your armoury will allow you to make last minute corrections to your glide.

The poorer glide performance of a powered aircraft means that your field selection options may be limited. But like a glider, they will vary with height from straight ahead to an ever increasing arc left and right of the aircraft. I'm not that sure that all pilots know what height is required for 180. I need about 500' for a 90 degree turn and just under 1,800' for a 180 (a heavy twin). Knowing what you can do means firstly you will not waste time looking where you can't go and secondly, you might plan your climb-out so your safety is not compromised if you have an engine failure. I remember "field-hopping" on final glides. Into wind I carried very little margin but downwind about 300' so I could do a 180. But my path was by fields that had already been selected.

Lastly, low flying rules. Do they apply to flight training where the purpose of the detail was to teach forced landings? I considered that the exemption in Rule 5 3.a.ii applied. Not all approaches to land have to end in a landing.

PM

ps. It is good to see Mary posting. I remember when she first started gliding at Booker. We tooks bets on what she was going to prang next. Needless to say we all lost, but our stakes were wisely invested by the winners in a beer rental scheme.

Blind Squirrel 31st Oct 2015 03:46

When I started training, back when dinosaurs roamed the earth, a favourite instructor trick after just three or four hours' dual was to pull the throttle closed at around 150' AGL and bawl "ENGINE FAILURE" into one's right ear. The aim (successful) was to din it into one by instinct (i) to push over firmly the instant things went quiet up front; and (ii) to figure out how to get the thing on the ground again without running out of runway. These were invariably practice EFATOs to a full stop.

They also didn't let people go solo until they had demonstrated proficiency in sideslips.

The payoff, for me, came a quarter of a century later, when things did go silent up front.

Pull what 20th Nov 2015 11:03

Some student pilots are not capable of interpreting a CA approach so you also need to be able to also teach low key 1000ft point glide approach/PFLs. In most cases low ley is a better starting point as it also teaches better height judgement. Should I spend 5 hours of someones money of something they cant grasp or spend five hours practicing something they have grasped and are completly happy with?

Instructors need to be flexible and teach for the student not for the instructor.

While I agree that oval short circuits are best practice its not possible to always fly them in a circuit where you may have 4 different schools mostly flying squares. In fact ovals on base can be dangerous with low wing aircraft as you have not got a clear view of final approach, this isnt a problem in a disciplined well controlled military circuit where all a/c are turning at the same point.

The mistake the pilot seems to have made with the EFATO is selecting an area with a poor undershoot(as well as landing area and overshoot). Very few instructors teach undershoot awareness, the ideal landing area(not field) has a good undershoot because if you make a mistake thats where you are going. When you teach selection of a landing area(not field) you should also teach selection with a good undershoot area as the undershoot can pose a bigger problem that the landing area. Failing to reach the chosen landing area is the most common error(TEM)

The PFL is poorly taught as most instructors attempt to teach the whole exercise in one go. Before you get to the PFL you need to teach landing area selection and landing run orientation. This can be started in the early lessons while transiting to and from the training area. The next stage is to demonstrate the procedure without any checks just concentrating on flying the procedure looking out and engine considerations. This needs to be started around 2500ft AGL. Give the student TIME! (from 2000ft you have around 3 minutes)

It is not nessecarry to continue a PFL below 500ft agl, if you are unable to determine from this height whether you can get in or not you must be engaged in some sort of split xxse or just scraping in manoevre. Setting a 500ft limit sets a better example for the student who will need to practice this while solo and may not see that electric cable on the perimeter hedge. The place to pratice below 500ft is the airfield. More efficient use of expensive air time can be spent in getting to a 500ft point every time where there is no doubt that a reasonable arrival can be made without comprimising the aircraft stucture. More emphasis also needs to be placed on the teaching of the reality of an off airfield arrival EG, fire, obstructed exits, inversion, being trapped, breaking windows, pax evacuation etc.. There is much more to a off airfield arrival than some text books and instructors would have you believe!

Why is there a problem with having an interior cam for first solo? Its a great teaching aid and debriefing aid- for those of you who do debrief after first solo (ha ha). Fitting anything to the outside of the aircraft without approval would have some legal implications especially if it dropped off!

Pilot DAR 26th Mar 2016 05:17

Is was checking out a pilot in the 180HP Super Cub on skis a few weeks back. After I packed a "runway" in the fresh snow for him (which was more than a km long - lots of room!), we did some circuits. He did okay on the new type. As a part of any type training, I train forced approaches to a stop on the surface. So that was next, with a briefing. He mentioned being an instructor, so I looked forward to disciplined skills. They were, but missed the mark pretty badly.

With a briefing, and a 3, 2, 1 count, I gently closed the throttle, and the frozen lake "runway" approached. I had positioned him at the entry into the mid left downwind to our runway. He focused on his training, and what he would train his students - but no way that would have got us near our runway, nor even to a suitable landing area elsewhere. When he thought he was too high, he turned away from our runway to loose altitude - he did! Without my calling an overshoot with power, the plane would not have survived. He seemed rattled.

I tried to figure out what had gone wrong (beyond the obvious 270 degree right turn off the left downwind to base , he's supposed to be able to teach me forced approaches. I said "let me try".

From the same position overhead, I pulled the power in myself. I followed John Farley's advice, and pointed it where I want to crash, and then just not crash it. The "pointing" involved a turn all the way around to align on final. The "not crashing" part suggested that a good slip would get me down, without building up too much speed to dissipate in the flare. It seemed to work, with the fluffing of snow on touchdown being my reward.

My charge seemed stunned, with expressions of amazement that a slipped turn to the the forced approach area below was even possible. We practiced for an hour, and his skills grew rapidly. He's rethinking "gliding" now.

I resist the notion that an aircraft should be flown at "best glide" speed, if "making" the field is not the primary concern. I would rather point it down, and get it to a suitable final approach close by, with certainty, and then rid myself of any un needed speed as a secondary effort. The worst is I carry too much speed over the fence, and go off the far end of my selected "spot". That's much better than not making my selected spot at all, and crashing at an unsuitable place, which was not my selection.

I hope those training forced approaches also train to just get it down, without stretching a cross country to get there, when a suitable place is very nearby. Power off speed management takes on a different form, but also valuable....

tmmorris 26th Mar 2016 13:19

That's a really interesting post, as, analysing my own flying, when I do an actual glide to land (when I find I'm a bit high or fast on a tight final turn, for example) that's exactly what I do: point it at the touchdown point and then control the speed as required. Yet when I do a PFL, I obsess over trimming for best glide speed first, as taught by my instructors. I'll go away and practise...

Gertrude the Wombat 26th Mar 2016 14:08


Originally Posted by tmmorris (Post 9323743)
Yet when I do a PFL, I obsess over trimming for best glide speed first, as taught by my instructors.

I think I've always understood that as getting the speed under control as the first thing you do so that you don't waste energy whilst looking around for a field, planning a circuit, restarting the engine etc. Then, surely, you do whatever it takes to get into the field.

Pilot DAR 26th Mar 2016 17:07


getting the speed under control as the first thing you do so that you don't waste energy
If you need to "make it to shore" or "make it over the mountains", yes.

However, I would rather make it with certainty to a closer adequate landing area, than maybe not make it to the [better] more distant landing area, and risk a total crash short of it, because I could not stretch the glide - started by fixating on the glide speed. Thus, making the spot will be the first thing I focus on - right to close final, with speed control erring to too fast/high until the bitter end.

You can always dump speed at the end. Most planes can be slipped right onto the surface with full pedal (the Super Cub on skis did have to be straightened out before touchdown. Drag increases as a square of the speed, so if you have too much speed, the drag you create to rid yourself of the speed will be even more effective. I can always get rid of at least some of too much glide approach speed/altitude, but I cannot recreate it once surrendered!

At the end, (pun intended) I'd rather misjudge, so as to off the far end of the landing spot at 20MPH and dent the plane, than to stall short into the stone wall at 60MPH, and destroy myself and the plane!

When I'm water flying, "best glide speed" will be out the window, unless I'm over forest or ragged mountains. The speed at which greatest distance of altitude lost is achieved, is somewhat more slow than the speed from which a safe power off water landing can be made. If you come into the flare in a seaplane at the "best glide speed", you're in for a very bad splash!

Lou Scannon 26th Mar 2016 18:18

Back in the fifties when I was learning to fly Tiger Moths and old ex fighter pilot gave the advice that in the event of engine failure, I should pick three inline fields with low hedges that were aligned more or less into wind and try for the middle one.

If you screw up and undershoot you get the near one and if you overshoot you get the far one. If you hit the hedge it will probably not kill you.

It worked for me some 20 years later when flying Chipmunks and an engine disintegrated on me.

BigEndBob 31st May 2016 06:58

I now teach fly constant attitude at or preferably above best glide.
Then wash off any excess speed with flap or side slip.
I explained my method to my instructor examiner and he had never seen that method before?


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