PDA

View Full Version : Stunning go around at LHR today


Evey_Hammond
23rd Feb 2017, 20:28
As a terrified flyer, who will only fly with BA, I was stunned today to watch a live stream of a late go around by a BA pilot. Video is available here (https://www.facebook.com/bigjetproductions/) & the plane in question is in the frame from 1m 32s in the post called "#StormDorris PART 5".

It did 2 go arounds, successfully landing on the 3rd attempt.

Very tricky conditions out there today, hats off to all pilots :ok:

If anyone knows this pilot, please buy him/her a pint from me!

Ant
23rd Feb 2017, 20:48
I'll admit that, at first, I suspected this was another bit of clickbait - the sort that crops up on PPRune from time to time.

However, there is indeed a jaw dropping moment mentioned by the original poster, so even if it IS clickbait the video still has merit in itself.
And apologies to Evey if there wasn't an intention to clickbait!!

Interesting clip.

HighAndFlighty
23rd Feb 2017, 21:06
A definite "crikey" moment right there.

Evey_Hammond
23rd Feb 2017, 21:11
lol no clickbait here! Filmed by 2 plane-mad nutters who I've been following for a while but no offence taken ;)

Would love it if the pilot saw this (& would love to know how he/she feels watching it back) :eek:

DaveReidUK
23rd Feb 2017, 21:59
I'll admit that, at first, I suspected this was another bit of clickbait - the sort that crops up on PPRune from time to time.

How could a clip that's captioned "A British Airways A319 almost crashes" possibly be clickbait ? :O

KelvinD
24th Feb 2017, 04:44
"Nutters" struck me as appropriate. Did their mum know they were out? And will someone teach them to use manual focus?

DaveReidUK
24th Feb 2017, 07:03
And will someone teach them to use manual focus?

A lesson in aircraft recognition might be good, too - that "A319" was an A320 (G-TTOE):

http://www.avgen.com/BA869%2020170223.jpg

planedrive
24th Feb 2017, 14:32
Interesting that they commenced a third approach (according to the OP) after two failed due to weather. Most Ops manuals aren't keen on the idea due to 'get home-itis'.

Amazing footage though! Really shows the power the wind can have!

DaveReidUK
24th Feb 2017, 18:22
Both GAs were between a preceding and following aircraft which made successful landings, so a third attempt doesn't seem unreasonable under the circumstances.

Jwscud
24th Feb 2017, 19:31
The few seconds those engines take to spool as you firewall the thrust levers seem like a lifetime in that situation!

Well executed go around from a nasty situation.

noflynomore
24th Feb 2017, 22:25
PNF took a while to remember to call "positive climb" though, took aeons before the gear was raised. Must have had something else on his mind!

Piltdown Man
24th Feb 2017, 23:10
I don't know of any sensible Ops Manuals that would have a limit on the number of Go-arounds. The limit is the fuel in the tanks. What is good is that go-arounds are becoming more acceptable and long may that be the case..

Denti
25th Feb 2017, 06:49
Any OM/A i have read did have something to that effect. However, not as a hard rule, more as a guideline.

My current one says this:

If, in marginal weather conditions, two go arounds have been carried out at an aerodrome, consideration should be given to diverting or holding until an improvement in weather occurs.

The decision to attempt a third approach immediately should normally only be made if a significant improvement in the weather conditions has been reported or observed from the flight deck.

The options of diverting or holding will be affected by fuel considerations and by forecast weather conditions at the destination and at the alternate.

Go arounds, especially multiple go arounds, can be distressing to passengers. Commanders should, when workload permits, use the PA to give reassurance appropriate to the situation.

Personally i was only once in that situation, and we decided to divert after the second go around, although the competitor airline landed quite happily (they used 737 classics without predictive windshear system). A nearby airport had a better terrain profile and a runway more into the wind and the approach and landing there was uneventful. The real struggle came afterwards, as the company wanted us to fly back to our planned destination regardless, and it took quite a lot of talking to change their minds. Without any change in weather conditions more go arounds would have been guaranteed, as the PWS call out "windshear ahead, go around" means a go around is mandatory.

Station_Calling
25th Feb 2017, 10:15
PNF took a while to remember to call "positive climb" though, took aeons before the gear was raised. Must have had something else on his mind!

I know this is an Airbus, but on a Boeing for a windshear go-around you do not change the configuration of the aircraft until clear of the windshear. I would be surprised if Airbus was any different.

Jn14:6
25th Feb 2017, 10:18
Station Calling just beat me to it!

Raising the gear would open the gear doors, causing unwanted extra drag during the escape manoevre.

A seriously good job done!

Gonzo
25th Feb 2017, 10:28
Not sure at the time there were many other options that were boviously better, all had similar winds, and at LHR it was almost straight down the runway.

Evey_Hammond
25th Feb 2017, 10:50
Any chance anyone here knows who might have been flying this plane? Would so love to hear their reaction to the video and how they handled it on the deck. I tip my hat to them :)

pax britanica
25th Feb 2017, 11:04
I was wondering what the effect on an approach of the Doris winds would be at LHR as they were , as Gonzo says, straight down the runway but also seriously gusty. The phrase, the plane just dropped out of the sky' is commonly used by passengers encountering turbulence but this crew faced exactly that situation didn't they -what 60-70 feet up and down goes the nose with the plane following. Are there headwind/gusting limits for approaches because this one looked seriously more scary than all of the crabbed bouncy crosswinds that always make the internet from LBA and BHX and really must have come completely out of left field for the crew even though it was very windy. I mean they cannot fly the approach at Vref plus 60 just in case the wind chooses to vanish at some point can they.

Do they get Earl Grey AND cream cakes with the chief pilot after that or is it a case of that's what you're their for laddie (or lassie these days)

Gonzo
25th Feb 2017, 13:04
pax,

I mean they cannot fly the approach at Vref plus 60 just in case the wind chooses to vanish at some point can they.

Well, they sort of do!

Ground speed MINI function on the Airbus in strong headwinds mean they actually speed up (in terms of ground speed) when compared to other manufacturer's aircraft. It's all about maintaining a certain energy state.

Here's a basic explanation of GS-MINI from Chris Scott on PPRuNe back in 2008.

Now: let's take the sea-level ISA case, where IAS=TAS; a Vapp of 130kts; and a predicted headwind of 10kts entered into the Performance page. On a conventional aeroplane stabilised at Vapp (130kts) at a height of 500ft, if the headwind is 30 kts the GS will be 100kts. But when it comes over the threshold, where the headwind is only 10kts, it will need to have accelerated to a GS of 120kts to maintain the required Vapp of 130. This will require a lot of extra energy (from the engines), which may cause problems, particularly if the loss of headwind happens suddenly (like at night).

It makes sense, therefore, to ensure that the GS remains at or above 120kts throughout the approach, even though this initially results in a higher IAS (150kts at 500ft in this case). The "managed" speed (IAS) target on the ASI (used by the pilot and the autothrottle) goes up and down with the headwind, but never below Vapp. Reaching the threshold, provided the actual headwind equals the predicted figure, the speed target will be Vapp. If the wind is higher, the speed target will be above Vapp. This should not be a problem for stopping in the runway length, because the GS will be no higher than originally planned.

RAT 5
25th Feb 2017, 14:02
That was an interesting video watching the different techniques. Size does matter, but we knew that. Listening to the ATC wind and looking at the drift angles I suspect LTN RW26 on the hill would have been horrid on that day. MAN RW24 in the lee on the terminal, as was LHR, would also have been interesting if the W/V was the same.
Does anyone have any knowledge?

For the BA pilots I applaud their decision. To me that is the more difficult element of a GA than the execution. There you are, clear VMC, only a few feet left and perhaps even over the tarmac, and deciding discretion is the better part of valour.

wiggy
25th Feb 2017, 14:48
pax

Do they get Earl Grey AND cream cakes with the chief pilot after that or is it a case of that's what you're their for laddie (or lassie these days)

How it usually works - file a (short) report for the go-around, go home or do next sector as required, then in the next day or two hope you don't get a phone call because the Flight Data recorder screening has flagged something the management want to talk to you about. That's about as warm and fuzzy as it gets.

Re: raising the gear, agree with other thoughts here, there's a danger of the SOP monkey triggering something unfortunate in circumstances like this, yanking the gear up straight away in reponse to a positive rate, even on what looks like a non-windshear go-around, might not always be the best course of action...c.f. Emirates not that long ago......out of fashion I know but Airmanship and all that.

Nightstop
25th Feb 2017, 16:12
In our Company the PF reads the FMA before the PM calls "Positive Climb". This is to ensure that the correct modes have engaged ie TOGA not FLEX, with NAV. Same aircraft type.

pax britanica
25th Feb 2017, 17:02
Gonzo and Wiggy thank you very much for your replies.

I can see that retaining the enrgy to go around rather than over compensate for rapid wind changes makes sense-still makes for a few scary moments though doesn 't it. And Wiggy, understand what you say but it seems a bit sad that management never give out any compliments but are always looking for infringements of the rules
PBr

Evey_Hammond
25th Feb 2017, 21:22
Agree with Pax, it is a real shame if management don't give out compliments to pilots in situations like these :(

Denti
26th Feb 2017, 04:39
Well, i wouldn't expect any high praise for a go around. It is after all part of the job we are trained for. In fact, the training is that every approach ends with a go around, and that is what we brief for every flight.

However, yes, a thank you for non normal circumstances are kinda nice, and i have to say i was pleasantly surprised when my company at some point sent me a thank you letter and a nice bottle of red after a technical defect prompted us to do a full emergency landing preparation and procedures.

White Knight
26th Feb 2017, 05:45
To clarify Airbus procedures if there is a Reactive Windshear warning. 'Windshear TOGA' and apply full thrust. NO config changes until both pilots confirm that they're out of the shear... Then PF will trigger the return to normal SOP with a 'Go Around Flaps' call.

Part of that return to normal SOP includes the 'positive climb' and then gear retraction. That may happen at quite an altitude depending on the severity of the windshear...

Big Jet Productions
26th Feb 2017, 11:29
Good afternoon everyone,

Brilliant to see the debate and chat this video has evoked to the situation in question.

At Big Jet Productions we are a massive promoter of pilots and one of our aims is to bring pilots and their incredible skills into more of a public spotlight.

Does anyone on this network know the pilots of #BA869? Or could have the means to locate them? We're sure they'd love to see the footage.

Mooney12
26th Feb 2017, 13:12
PNF took a while to remember to call "positive climb" though, took aeons before the gear was raised. Must have had something else on his mind!

Prob a Windshear G/A. Hence, leave the config until climbing clear. (Opening gear doors to raise gear causes more drag)

Station_Calling
27th Feb 2017, 08:30
Quote:
Originally Posted by noflynomore View Post
PNF took a while to remember to call "positive climb" though, took aeons before the gear was raised. Must have had something else on his mind!
Prob a Windshear G/A. Hence, leave the config until climbing clear. (Opening gear doors to raise gear causes more drag)

I find reading the whole thread first helps.

shaun ryder
27th Feb 2017, 09:02
Raising the gear would open the gear doors, causing unwanted extra drag during the escape manoevre.

Are you sure? Thats new to me. More likely that the wheels need to be down during the escape in case the bird meets terra firma.

wiggy
27th Feb 2017, 09:50
I suspect leaving the gear down is as you say mainly due to the ground contact problem but TBH the logic might be a bit of both. Certainly of some types with big wing/body gear doors the opening/closing can cost you a knot or two..or three.