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-   -   Question re extending downwind. (https://www.pprune.org/private-flying/595620-question-re-extending-downwind.html)

Beethoven 7th Jun 2017 12:45

Question re extending downwind.
 
Quick question to gather opinions on how to deal with the following, assuming A/G or AFIS if I may. I'm on downwind, preparing to turn base but I am aware of an A/C on final which I cannot see. in order not to cut this A/c up I would assume one would extend downwind until the A/C on final passes abeam. However I am aware that extending downwind is often seen as bad form (disruption of circuit size...noise abatement etc.) and am curious to know how to deal with this situation without extending downwind. Indeed one of our runway's downwind would take you into controlled airspace if you extended it by very much!
My concern is in the event of a non-sighting of the aircraft at all (as has happened to me a few times) would anyone turn base NOT having seen the aircraft pass them?

Would there be any (safe) way to I initiate a go-around from the late or extended downwind position back into the circuit without possibly conflicting with the unseen aircraft on final. I have heard people say that a go- around from here is simply to fly the circuit pattern at circuit height without descending but to me that implies still turning base in front of the AC on final and hoping it is not going to go-around and thus cause conflict, or even possibly it is on a very steep straight-in. I am very much aware of the use of RT in these situations but all too often it proves inaccurate.

Thanks in anticipation.

9 lives 7th Jun 2017 12:56

Beethoven, fair question.

If a "long final" aircraft has the potential to conflict with your normal circuit, yes, extend your downwind, it's not worth the conflict, even if by some slim chance you could assert "right of way" to the runway. If extending is not practical, then yes, just fly a wide circuit without descending, and rejoin for your second attempt. As you will be above, and hopefully a little behind the other "long final" aircraft, you should be able to keep it in view. Your position confers right of way to land [first] to that aircraft - even if they have been discourteous with circuit manners. If you feel the need to express your concern about the situation, that is better done later on the ground, than in real time in the circuit.

Do not assume that an aircraft which is already not well positioned will suddenly get it right, and yield to your right of way. And, compelling them to do that could result in a worse situation overall, or worse, if they are emergency landing, and you don't know that. If you're aware, and in control, yield, and you maintain safe separation. If doing so has cause you to fly an unusually long downwind, which is not in conflict with other airspace/traffic, the aircraft which may be following you must allow for this, and follow you.

I hope that helps....

Jan Olieslagers 7th Jun 2017 14:23

My own idea would be to continue the circuit as intended. If the other chap(pess) is already on final, (s)he is sure to have gone by the time I get to final. And at any rate I can and must check runway availability before putting down...

One big caveat, however, a situation I lived one day: someone reported base when I has halfway downwind. I had got the plane in sight, separation was ample, so I continued the circuit as published (it is rather strict at that place). When turning final however I had the fright of my life when another plane turned up from my right - he had been in the circuit, unobserved by me, and he did have extended his downwind. I am sure he must have been nordo - which is allowed at said field.

piperboy84 7th Jun 2017 14:40

At uncontrolled fields regardless of there being an AG service I make position calls starting 10 miles out and the usual circuit calls all the way down to short final then when clear of runway just like I would if at a field with no other traffic or AG, this hopefully prompts the other guy(s) to respond in kind giving you an indication of where to look to attain visual contact (which I would deem mandatory for safety prior to turning base). If the other guy has no radio or is not the talkative type and I still did not have a visual I would again self announce that I was extended my downwind till I received either confirmation he was on the deck or had him in sight and I was safe to turn base. If airspace prevents continuing down wind I would self announce prior to commencing a 360 turn to the outside of pattern and again prior to rejoining the downwind midfield, then commence the talking and looking process again till visual with the other traffic or repeat the 360. Bottom line I am not going to fly in a direction or altitude that could put me on a collision course. If I ain't visual with other traffic I ain't going there.

Once on the ground I would with the upmost respect suggest to the "straight in" guy that perhaps if he was bent on doing straight in's while others are in the pattern a bit proactive position reports regardless of what the AG is doing would be extremely helpful. The AG is for field advisorys only, my understanding is they are NOT in any way responsible nor should be relied upon for separation or traffic management. It's uncontrolled VFR, see and avoid, that is entirely your responsibility.

NorthSouth 7th Jun 2017 14:43

Seems to me if you're about to turn base and you know another aircraft's on final, in normal circumstances you won't reach final for about another minute, by which time the other aircraft will be a mile or so further down final. So you could only conflict if he was two or more miles out when you became aware of him.

Whether AG or AFIS, that aircraft should have been informed about other circuit traffic when he called for join, and if he was told the circuit's active, should have done an overhead join.

People joining straight-in when they either don't listen or don't care about other traffic are being very selfish as well as dangerous.

Jan Olieslagers 7th Jun 2017 14:47

And you may listen for all you're worth, if the other one is nordo either by nature of following a defect or even through neglicence (still tuned to previous field, perhaps) then you will hear nothing zero nada niente.

Mariner9 7th Jun 2017 15:32

Quite simple, the rude pilot on a straight in approach on long final should immediately be executed on landing. (Yes I know there is nothing in the OP's post that says or even suggests that the pilot on final was rude, or was on a long final, (though there's a suggestion admittedly he may have been on a straight in) but he's been found guilty on all three counts by the Pprune jury above lol)

With regards to the OP's question regarding a safe G/A from downwind, I'd probably climb straight ahead then once 1000' higher turn in circuit direction to rejoin via overhead. However in the situation described, Id probably slow down while constsntly trying to spot traffic, extend downwind a bit if necessary, then turn base before controlled airspace and g/a from that point if traffic still not spotted. Cant ever recall having to do that though - you generally spot the traffic eventually

piperboy84 7th Jun 2017 15:44


Originally Posted by Mariner9 (Post 9795587)
Quite simple, the rude pilot on a straight in approach on long final should immediately be executed on landing. (Yes I know there is nothing in the OP's post that says or even suggests that the pilot on final was rude, or was on a long final, (though there's a suggestion admittedly he may have been on a straight in) but he's been found guilty on all three counts by the Pprune jury above lol)

Well if he's not guilty of doing a straight-in but is far enough out on final you can't see him from the downwind he must be doing one of those wide "747 circuits" in which case the bastard deserves to be denutted and stoned to death.

BEagle 7th Jun 2017 15:51

I was once supervising 4 solo students in the visual circuit who were coping just fine, sticking to the rules and not getting in each others' way. Then a fifth aircraft announced that it was 'joining visual, straight-in'....

I told the controller to advise it that there were 3 in the circuit, one about to land and to 'join deadside'.

Which it did, fitting in and landing off its first approach.

It was a Queen's Flight corgi-carrier 146 positioning back after ferrying Air Miles Andy to some pi$$-up or other. The captain saw my CFI in the bar and tried to make some snide comment, only to be told to read the Flying Order Book and to be grateful that he wasn't told to hold off with the circuit full.

The visual circuit should be predictable; my teaching was never to extend beyond a point which corresponded to base leg for a flapless circuit, if that was looking unlikely then go around at circuit height and cross to the dead side.

Joining straight-in and calling final from outside the ATZ is only ever acceptable if there's no other traffic.

Mariner9 7th Jun 2017 16:00


Well if he's not guilty of doing a straight-in but is far enough out on final you can't see him from the downwind he must be doing one of those wide "747 circuits" in which case the bastard deserves to be denutted and stoned to death.
As the defence attorney, I submit in mitigation that the sentence should be reduced to removal of only a single nut before being stoned to death given that he at least made a radio call.

piperboy84 7th Jun 2017 16:19


Originally Posted by Mariner9 (Post 9795614)
As the defence attorney, I submit in mitigation that the sentence should be reduced to removal of only a single nut before being stoned to death given that he at least made a radio call.

Alright Mr Defense Lawyer I'll accept a plea bargain down to one nut and a poleaxing prior to the stoning

Martin_123 7th Jun 2017 16:26

I think i've only been in similar situation twice in bad haze, in both occasions I asked the AC on final to report their altitude, in both cases they were at some 300-400 ft and descending. For me that tells me where to look because you roughly know where you need to be at 300 ft from runway to maintain a half decent approach angle and that helped me spot them and decide on my next steps. If you cant see them and they're not talking to you, I would only extend if there's no-one else in the circuit or if the other party is also happy to extend. Communication is the key, I think.

pilotjimbo 7th Jun 2017 16:41

Make Left/Right (depending on circuit direction) orbit's at the end of the downwind leg until you are sure the landing traffic has passed?

Having learn't/continuing to fly from a busy single-runway airport with airline traffic, I've become all to familiar to your scenario. The only difference here is, I've been under control from at ATCO rather than communication with an A/G or AFIS.

I have quite often been on downwind, under the impression I'm the only circuit traffic, and number 1 for landing… and suddenly a revenue flight gets passed from Radar to Tower, which instantly has priorty over GA traffic. Controller tells me to make one/two/till advised orbits at the end of the downwind leg. Whilst annoying, it works.

I understand that under an A/G or AFIS service, it may be a little more impractical, but better than ploughing into CAS?
If the circuit is ram packed, then yes, not practical either…

Peter Geldard 7th Jun 2017 16:55

In the States it is quite usual for a person to extend their downwind to allow someone to land/vacate the runway.
This is usually announced as: "Call my base" i.e. telling the person who is extending downwind when it is clear for them to turn on to final.

BackPacker 7th Jun 2017 17:15


Originally Posted by Peter Geldard (Post 9795651)
In the States it is quite usual for a person to extend their downwind to allow someone to land/vacate the runway.
This is usually announced as: "Call my base" i.e. telling the person who is extending downwind when it is clear for them to turn on to final.

What I find in Europe in general is that as soon as a radio frequency is formally designated as "Radio" or "Info", all of a sudden pilots become afraid to talk to each other, and instead assume that everything has to go via the poor bloke sitting in the clubhouse, with no visual on the circuit.

That radio frequency is first and foremost a safety device. If you need it to verify someones position, use it. And if you don't know the proper ICAO/CAPwhatever phraseology, use plain English.

"Aircraft on final, I'm late downwind, do you have me in sight? Can you call me when abeam?"

"Aircraft on final, I don't have you in sight. Can you wiggle your wings and turn your landing light on?"

In this respect, the Traffic/Unicom frequency in the US at least offers a far easier premise: "There's nobody on the ground to help you, so TALK TO EACH OTHER!"

Jan Olieslagers 7th Jun 2017 18:12

@Backpacker: yes, I generally agree, but it does vary between fields. Largely generalising: French speaking pilots seem to find it quite natural to address one another, and I've heard them do so quite casually and to good effect. And I'd not be surprised to find the same in Italy, Spain, Portugal. German speakers OTOH seem to prefer a central authority...

Still, I should like to warn against the use of non-standard phraseology. Or do we need to be reminded why ELP was introduced..? :(

And even more prominent, again: not every aeroplane carries a radio, or to good use.

bingofuel 7th Jun 2017 18:17


Would there be any (safe) way to I initiate a go-around from the late or extended downwind position back into the circuit without possibly conflicting with the unseen aircraft on final.
Yes, maintain circuit height, fly a standard base and final and call 'going around' and position slightly to the deadside as normal to watch for conflicting traffic then continue with a normal circuit. Extending downwind really just makes the situation worse for everyone else.

TheOddOne 8th Jun 2017 15:02


Make Left/Right (depending on circuit direction) orbit's at the end of the downwind leg until you are sure the landing traffic has passed?
I have to say that's the one 'no-no' in this thread. I know some controllers are still instructing traffic to do this, but after the sad, fatal accident at Southend I thought it had dramatically reduced. (C150 on final was instructed to orbit to allow a faster aircraft on a straight-in to land. The 1st solo student spun in half way round the orbit, as I recall.)

In my view, the safe procedure is to continue to fly the circuit, only at circuit height/altitude, until regaining a safely spaced position downwind.

TOO

gasax 8th Jun 2017 15:10

When I was training, something of a long time ago, I recall one afternoon where the controller at the barely regional airport have three of us orbiting in the circuit so he could give a scheduled flight a straight in approach - pretty dumb at what was essentially a training field.

I'm with The oddone - never orbit - bluntly - how is that aligning with the circuit direction?

Equally I've just come back from a French airfield that mixes GA, parachuting, gliding, ULMs and radio models all in the same space - talking becomes really quite important when the tower is not manned!

Piper.Classique 8th Jun 2017 15:43

Used to fly a tug at Lasham. On a fairly busy day we would have four or five tugs launching gliders off the main runway, two twin drum winches launching gliders off the grass next to the runway, and of course the tugs coming back for the next customer. Some of the gliders came back, some went off cross country, and some stayed local for a while. Then they landed.
We had one launch marshal controlling the takeoffs via radio to the winches and tugs. The tug drivers listened and rolled when they got the command to go. The winch drivers also had the benefit of a flashing light, as well as the radio. The cars bringing the cables back were sent off by the winch drivers. Landings were either side of the runway, which is fairly long, anywhere you could get in without crossing to the other side on base leg.
Most gliders were non radio. Just as well, really, as how would you get a word in edgeways anyway.
Oh, and I forgot the motor glider doing circuits.
Teaches a decent look out, at least. Then we would get the C152 leaving the maintenance base calling for take off instructions. Or, even better, making full circuit calls. 😂


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