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-   -   What to do if your lost? (https://www.pprune.org/private-flying/357770-what-do-if-your-lost.html)

PPRuNe Radar 19th January 2009 22:15

7300 is not allocated in the UK, so the purpose of anyone selecting it will be unknown to any ATC unit here.

PPRuNe Radar 19th January 2009 22:17


When you get your PPL, you get yourself a decent big GPS, read the manual, and use that for all flight, and you won't get lost. Learn to use VOR/DME and use that as a concurrent backup, and then you definitely won't get lost.
I agree totally. However, if you infringe Controlled Airspace without a clearance, who are you going to blame ? :)

flybymike 19th January 2009 22:44

Obviously the Americans, for sending out dodgy GPS signals.

IO540 20th January 2009 03:51


However, if you infringe Controlled Airspace without a clearance, who are you going to blame ?
How would you infringe CAS with a clearance?

:) :)

Funnily enough the UK CAA won't give a **** how you were navigating when it happened.

DaveD 20th January 2009 06:46

I really disagree with relying on GPS to learn how to get yourself so you know where you are... it's just such bad practice... What do you do if your instruments fail? Or your GPS packs in? Learn the other methods... it's better to have them under your belt rather than relying on a piece of equipment that might break on you. Also, not all planes have GPS.. so if you find yourself wanting to rent an airplane are you going to say to them, "oh it doesn't have GPS, i might get lost...":D

Pace 20th January 2009 07:43


I really disagree with relying on GPS to learn how to get yourself so you know where you are... it's just such bad practice... What do you do if your instruments fail? Or your GPS packs in? Learn the other methods... it's better to have them under your belt rather than relying on a piece of equipment that might break on you. Also, not all planes have GPS.. so if you find yourself wanting to rent an airplane are you going to say to them, "oh it doesn't have GPS, i might get lost...
Dave

I agree with you that it is important to have all your skills available to you as you never know when you might need those skills.

We have become so used to fancy GPS displays that modern pilots can get very lazy many not even bothering with any sort of flight planning because of GPS.

I can remember flying a Citation From Nice to Gatwick in winter at night. This one was a late citation 2 with FMC and Glass displays. We had all the route loaded. It was so easy just to put in the airway entry and departure points and see a clear display of all the waypoints stream out on the glass displays together with the sids and stars.

All of a sudden all the screens went black and it was a case of out with the charts and direct to VOR requests. The thought of flying one of the numerous Gatwick arrivals conventionally was a real brain tester.

Luckely we got the system up and running before starting down into Gatwick.

It is important to have all your traditional navigation skills well honed and then add the luxury of GPS because you never know when you might need them.

Pace

DOC.400 20th January 2009 08:23

K.I.S.S.......

Some personal events that have happened to me over the last eighteen years come to mind.......

I'm flying DR Waltham to Henstridge (I have no GPS.....:eek:) with an experienced rotary pilot next to me....unknown to us, westerly headings on the compass are 15-20 degrees out!! A quick call to 121.5 soon puts us back on track......

I recently get radio failure about to call Farnboro radar on a trip from Waltham to Goodwood. Squawk 7600 and after landing back at Waltham they inform me that Farnboro rang them on the landline to let them know a plane with radio failure was returning!! Comforting to know it works.....

Having visited D&D some years ago, we watched as an incident with a Tornado unfold on the Scottish borders -as soon as the pilot announced his problem, various red lines appeared on their map display from slave radar stations around the country, pinpointing the problem a/c -same would happen if you squawk 7700. Another comforting event!

Flying IMC from the north back to Waltham some years ago, I inadvertently select 7700 instead of 7000 after dumping Luton Radar. When I realised I spoke to D&D to let them know it WASN'T an emergency -they said, 'yes, we saw you and thanks for letting us know.'

Just going back to the training, isn't this covered in the sillybus any more -I remember a number of practice calls, both MAYDAY and PAN -OP should talk to an instructor and go and do some -it's no big deal!!!:ok:

Oh, and K.I.S.S.?

Keep It Simple Stupid..........

PS I may be Old School -but I'm concerned at the number of posters relying on GPS......

Final 3 Greens 20th January 2009 09:07

Mmmmm.....

The normal anti technology bias from some posters on this thread.

IMHO, one should not rely on any single form of navigation, but should have at least 2-3 sources to cross check.

For example, relying on a compass when flying DR is asking for a problem - we've all probably done it on short flights, but nonetheless it isn't good practice IMHO.

If cross checking compass/GPS, that problem will soon be spotted.

Likewise, if the GPS freezes, comparison of the chart timings/positions will soon highight that problem, too.

For me, a combination of DR, GPS, pilotage and VOR is a reasonable solution, backed up by 121.5 and the training fix system (not to be absued, but it is there - I have used it once since qualifying in 1994 and it helped to avoid an infringement of the Stansted zone.

If it all goes horribly pear shaped, then an early pan or mayday should be made.

IO540 20th January 2009 09:16

Let's ban the internet. It's dangerous - you might find the weather is OK to fly, get airborne, and then get caught in some nasty stuff, and die. If there was no internet, you would have lived.

QED.

BEagle 20th January 2009 09:52

Properly used, GPS will certainly reduce the chance of getting 'lost', I agree. But it's still vulnerable to 'Gi-Go' if used incorrectly.

As a minimum, I personally like a line on a paper map as well even when using a GPS route.

If you DO become lost, admit it. Then seek help. All the old 'percentage of distance flown since last position fix' stuff was fine in the days of few airways and Tiger Moths without wireless, but will probably be a waste of time nowadays and you'd inevitably end up somewhere uninvited! Far better to tell whoever you're talking to (if they have radar); if not then the nice chaps at D&D will help to keep you out of the smelly stuff. A low time, relatively inexperienced pilot uncertain of his/her position in the south east UK probably does merit an 'urgency' call, I would suggest.

LH2 20th January 2009 09:53


I agree totally. However, if you infringe Controlled Airspace without a clearance, who are you going to blame ?
The CAA and NATS of course, for being so anal with regards to controlled airspace in the first place. Hire more controllers and install new radars and then it'll be just like in the developed world. :ok:


How would you infringe CAS with a clearance?
By deviating from it? ;)

LH2 20th January 2009 10:17


I really disagree with relying on GPS to learn how to get yourself so you know where you are... it's just such bad practice...
Thanks very much for your novel point of view--never heard here before. Just so we can put the right weight onto your statement, care to enlighten us as to what your qualifications and level of experience exactly are?

Not to dismiss any truth in your statement out of hand, but it sounds a bit naïve, on the "this is what my instructor told me so it must be true" side. If you care to read a few pages back you will see that it's been mentioned that for your PPL (and CPL) you should be taught to use everything you've got in your aircraft, GPS included. Once you're out there in the big world, a busy arrival at some big airport in IMC in a fast aircraft is really not the time to start mucking about with VORs and ADFs. In real-world flying a GPS will quickly become your best friend, so forget whatever crap your instructor might have fed you.

This from someone who does not use GPS for flying (enough of it on my day job)--I like my steam gauges, and if the place where I end up on looks distinctly unlike my intended destination, well so be it. I fly just for the fun of it and I'm not really that bothered :}

flybymike 20th January 2009 10:47

Dave D, If you are renting an aeroplane and it "doesnt have GPS," you always have the option of using a portable one.

IO540 20th January 2009 11:02


I personally like a line on a paper map as well even when using a GPS route.
This is a very valid point. I am sure the majority of the anti-GPS views (well, ignoring the really daft ones) are based around not carrying any paper plan whatsoever.

There is persistent pilot forum rumour that people actually do that, but I don't know anybody (with a brain, and a PPL) who does that.

Myself, on every flight, a short VFR hop or a 900nm airways route, always carry a whole-route printout, enroute 1"=10nm sections (on long trips), and a plog.

Not a wind corrected plog, mind you... because I plan to always use radio nav. If the GPS satellites got shot down by Putin, I would use VORs (and advise ATC), and if I got a total electrical failure I would use the Garmin 496 in the yoke and fly the filed route by sticking one waypoint in after another, off the printed plog, using DCT.


By deviating from it?
Ah, but if you were OCAS initially, no ATC unit would have had the authority to issue any kind of "clearance" anyway ;)

silverelise 20th January 2009 11:47


Another option which hasn't been mentioned yet: get yourself an IR
Great. So there's our humble PPL, bimbling along uncertain of position, flying the aeroplane, looking out the window, checking the map, wondering who to talk to and now he has to read a book and complete a multi choice exam too? :eek:
:p

englishal 20th January 2009 14:17

Why do people assume that GPS users "rely" on GPS and lose all sense of airmanship?

When VFR I have my map too.....I'll look down at a town and cross reference the town with my map and GPS. I can then look into the distance and say "right, that is town X" and verify with map and GPS and even if my GPS failed I'd know where I was.

Likewise when flying an instrument approach, say VOR, I'd have the nav gear setup using the VOR and cross reference that to GPS / moving map. If my GPS had the ability I'd sequence the VOR approach in GPS too. Makes life much safer.

If I am going somewhere long distance then I'd take a plog generated on the PC using current winds - mainly for the fuel calcs. Short distances I may take one or may not....

Jim59 20th January 2009 14:42


Once you're out there in the big world, a busy arrival at some big airport in IMC in a fast aircraft is really not the time to start mucking about with VORs and ADFs.

Ummm.
This is getting off topic somewhat but should not be allowed to pass without some comment. Unless you are arriving at the one and only UK airfield with an approved GPS instrument approach (Shoreham) then unless you are doing an SRA or ILS approach then VOR or ADF are your only other legal (and safe) options. Last time I went into Southampton in IMC I used the VOR and ignored the GPS in the cockpit.

IO540 20th January 2009 14:44


Last time I went into Southampton in IMC I used the VOR and ignored the GPS in the cockpit.
Now there's a great piece of safety management.

Fuji Abound 20th January 2009 14:47

How many critical components do we rely on?

1. The engine - now if you have only got one, its pretty critical,
2. The pilot - ah yes, pretty critical and there is only one of those as well,
3. The prop - not a lot of good when part of a bade detaches,
4. Even the throttle cable - it concentrates the mind when it snaps and the engine stays where you last put it,
5. Etc

We love system duality. That is why we usually have two fuel pumps, and two mags. There is a chance of the GPS failing, or the MDF going blank, but there is not much chance of that happening at the same time as the backup GPS in your bag failing.

Simple, by all means rely on GPS for navigation, but if you do, go to the small expense of taking a spare with you.

I bet if you do the engine or the pilot or the prop will quit long before both GPS units quit at the same time.

Now how much redundancy do you want?

As for big boys flying instruments with GA glass cockpits these days about the only nav instruments you are going to be left with when the sh** hits the fan is the magnetic compass so best you check the backup GPS in your flight bag works. :)

Jim59 20th January 2009 15:08


Last time I went into Southampton in IMC I used the VOR and ignored the GPS in the cockpit.
Now there's a great piece of safety management.
If you are are on instruments, using dual VOR with DME to navigate and receiving a Radar Advisory Service why do you imply that including a GPS in your scan as well is a good way to be spending your time? It it all starts to go pear-shaped or something packs up it will still be there to fall back on. I was responding to the suggestion in a previous post that ADF and VOR are not the instruments to be used for navigation in this situation. I don't agree with the earlier post.


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