A-330/-340 Ailerons — Tech Ops Forum

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A-330/-340 Ailerons

Blackbird From , joined Dec 1969, posts, RR:
Posted (7 years 9 months 1 week 3 days 23 hours ago) and read 467 times:

They appear to have inboards and outboards which are paired together.

How do they work? -- Does the outboards lock out with flaps or slats up? Or does it work by airspeed only?

-AVK

5 replies: All unread, jump to last

VC-10 From United Kingdom, joined Oct 1999, 3636 posts, RR: 50
Reply 1, posted (7 years 9 months 1 week 3 days 22 hours ago) and read 395 times:

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In low speed mode all 4 ailerons operate. However above 190 Kts, in config 0 (Flaps/slats retracted) the otbd ailerons are contolled to zero deflection.

In some failure modes the otbd ailerons will be used up to 300 kts.

Mhsieh From United States, joined Jul 2000, 329 posts, RR: 0
Reply 2, posted (7 years 9 months 1 week 2 days 20 hours ago) and read 350 times:

I had read several times that on landing, the ailerons on 330/340 deflect UP on both sides to act as spoiler.
However, I have never been able to find any pictures of this. I have only seen landing pictures of spoilers up and ailerons in the drooped position.
Can anyone explain this?

VC-10 From United Kingdom, joined Oct 1999, 3636 posts, RR: 50
Reply 3, posted (7 years 9 months 1 week 2 days 18 hours ago) and read 345 times:

Mhsieh,

This only occurs on the A340-600

LMML 14/32 From Malta, joined Jan 2001, 2343 posts, RR: 15
Reply 4, posted (7 years 9 months 1 week 2 days 7 hours ago) and read 325 times:

All Airbus aircraft, including the A320 family, have the aileron droop facility. However on the narrow bodies this option is very seldom taken up by the operator. Interesting re-the aileron doubling as a spoiler on landing. I will try to notice it next time I see a landing.

Mhsieh From United States, joined Jul 2000, 329 posts, RR: 0
Reply 5, posted (7 years 9 months 5 days 12 hours ago) and read 274 times:

I think all A320/330/340 have droop ailerons with flao extended. I think it's standard. I have never seen a A320 without the aileron droop (UA, US, NW, AW, AC A320....to name a few, all have droop ailerons.