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Missing Winglet on an Airbus?

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Old 22nd July 2019 | 15:22
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From: fragglerock
Missing Winglet on an Airbus?

I flew last night on an Airbus type on a UK domestic flight. The aircraft had one winglet; the other wing had the winglet removed with what appeared to be gaffer tape covering where the winglet should have been attached.

Can an aircraft be dispatched with this defect for unlimited flying ? And does it have any performance impact on the aircraft operation?
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Old 22nd July 2019 | 15:59
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Trawling through my old (10yrs) copy of the CDL/MEL manual, for an A321 the following penalties apply for a single missing wingtip fence:

T/O and approach limiting weights reduced by 8910kgs
One engine inop ceiling reduced by 735ft
Fuel consumption penalty +1.34%

HTH
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Old 22nd July 2019 | 16:03
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From: Reading, UK
Originally Posted by atprider
I flew last night on an Airbus type on a UK domestic flight. The aircraft had one winglet; the other wing had the winglet removed with what appeared to be gaffer tape covering where the winglet should have been attached.
Are you sure it was missing at the start of the pushback ?

Can an aircraft be dispatched with this defect for unlimited flying ? And does it have any performance impact on the aircraft operation?
I would expect a small performance (fuel burn) penalty, probably not significant on a UK domestic route.

But when Aer Lingus had an A333 wingtip knocked off at SFO just over a year ago (by a tug driver), they positioned the aircraft back to DUB empty.
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Old 22nd July 2019 | 16:07
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From: fragglerock
Yep missing as I boarded and still not there on landing
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Old 22nd July 2019 | 16:14
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From: Commuting not home
Wing tip fence: one may be missing, TopBunk's data is pretty accurate for the A320 as well.
Sharklet: no go.
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Old 22nd July 2019 | 16:29
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From: fragglerock
Thanks for the informative replies folks
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Old 22nd July 2019 | 17:08
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A two-manned fossil fueled Rutan aircraft ground off one of those upturned wing ends during the takeoff roll of its flight once around the planet...all without stopping or refueling along the way.
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Old 22nd July 2019 | 17:24
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Originally Posted by dogsridewith
A two-manned fossil fueled Rutan aircraft ground off one of those upturned wing ends during the takeoff roll of its flight once around the planet...all without stopping or refueling along the way.
With MACH 0.8 ?
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Old 22nd July 2019 | 18:18
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Not uncommon - the 747-400 CDL allows dispatch without one (or both) winglets. Again, small performance penalty.
I don't know about the 737 winglets (didn't spend much time working the 737), and the 757 and 767 winglets are aftermarket STC so I don't know about those either.
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Old 22nd July 2019 | 19:41
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From: FL510
A330 and A340 also allow dispatch with one missing.
A320 sharklets however are a no-go.
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Old 22nd July 2019 | 22:10
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From: FL390
Originally Posted by LookingForAJob
Not a professional pilot but curious....anyone know why a missing sharklet is a no dispatch item?
Because aerodynamically it's roughly the same as lopping six feet off the end of the wing.
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Old 22nd July 2019 | 22:42
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Originally Posted by atprider
I flew last night on an Airbus type on a UK domestic flight. The aircraft had one winglet; the other wing had the winglet removed with what appeared to be gaffer tape covering where the winglet should have been attached.
High Speed Tape or HST. Approved by all Aircraft manufacturers for temporary repairs of this kind. Not 'gaffer' tape, whatever that is.
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Old 23rd July 2019 | 04:32
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From: Oztrailia
Originally Posted by tdracer
Not uncommon - the 747-400 CDL allows dispatch without one (or both) winglets. Again, small performance penalty.
I don't know about the 737 winglets (didn't spend much time working the 737), and the 757 and 767 winglets are aftermarket STC so I don't know about those either.

It’s been a while while but I’m fairly sure that the CDL only allows 1 Winglet removed on the 744.
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Old 23rd July 2019 | 04:37
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Originally Posted by ACMS



It’s been a while while but I’m fairly sure that the CDL only allows 1 Winglet removed on the 744.
It may not be in the CDL (been a while for me as well) but I know there is a way to dispatch with them both missing on a 747-400. It might be a service bulletin rather than CDL.
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Old 23rd July 2019 | 06:56
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Originally Posted by tdracer
I know there is a way to dispatch with them both missing on a 747-400. It might be a service bulletin rather than CDL.
I'd be surprised if there wasn't - ANA managed it for years:




Yes, I do know they were built like that.
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Old 23rd July 2019 | 09:49
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From: Commuting not home
Originally Posted by LookingForAJob
Not a professional pilot but curious....anyone know why a missing sharklet is a no dispatch item?
Wild guess: The asymmetric effect on lateral control have not been researched. Given the fact they really are tall fins, most of the present flight stability data would no longer be representative of the behaviour.
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Old 23rd July 2019 | 16:05
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From: fragglerock
Originally Posted by TURIN
High Speed Tape or HST. Approved by all Aircraft manufacturers for temporary repairs of this kind. Not 'gaffer' tape, whatever that is.
Whoops sorry.... Laymans error! Maybe i should have said Duck ...
(ducks)
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Old 23rd July 2019 | 16:59
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From: Denver
C'mon, folks!

Duct tape - because it was first used for sealing HVAC duct seams. I've never had to seal a duck.....however, one brand uses Duck as a registered brand name/logo (cute, hunh?).

Gaffer tape - very similar, used by gaffers (lighting technicians) to make repairs, reinforcements or temporary hold-downs on movie or stage sets

HST or Speed Tape - also similar, but with a stronger adhesive that won't (ideally) flap loose under the stress of the slipstream, and is more resistant to solvents like hydrocarbon fuels or oils.
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Old 23rd July 2019 | 17:00
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From: Falkland Islands and UK
My Dad was enroute from Brize Norton to the Falklands in 2013, and as the A330 taxied in at Ascension, it somehow ended up with a winglet jammed underneath the wing of another aircraft.
After some delay and discussion, I think the solution they came to was to keep the passengers onboard (presumably to keep the landing gear as loaded as possible), and refuel the wings asymetrically to lower the jammed tip to where they could move it clear. Then they removed the damaged winglet, and carried on South. The whole operation at Asi caused a delay of about 8 or 9 hours.
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Old 23rd July 2019 | 19:39
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From: fragglerock
Originally Posted by pattern_is_full
C'mon, folks!

Duct tape - because it was first used for sealing HVAC duct seams. I've never had to seal a duck.....however, one brand uses Duck as a registered brand name/logo (cute, hunh?).

Gaffer tape - very similar, used by gaffers (lighting technicians) to make repairs, reinforcements or temporary hold-downs on movie or stage sets

HST or Speed Tape - also similar, but with a stronger adhesive that won't (ideally) flap loose under the stress of the slipstream, and is more resistant to solvents like hydrocarbon fuels or oils.
Oh dear. Obvs we dont do irony..... 😜
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