A310 Slats

[OVERTALK]

I've been told by an A310 pilot that the A310 has seven (7) slats - and that three of those will not actuate in a ground manual deployment.

Seven seems like a strange number (3 on one wing and 4 on the other?).

More probably there's 7 a side (but that also seems excessive).

Question is related to a near accident (runway side departure) caused by non deployment of spoilers in a mild to brisk X-wind on a fairly non-greasy (damp only) runway surface.

The solution is thought to be an F/O's manual override that could enable manual deployment of all spoilers after (say) nosewheel placement (or radalt hook-in - or both). Reasoning is that it has happened before with spoilers armed on the A310.

Any thoughts from A310 qualified types?

Bit reminiscent of the 1993 LH A320 wheel spin-up fatal accident at Warsaw.

[747FOCAL]

A 727 has 4 per side along with 3 kruegers.

[Dagger Dirk]

http://www.iasa-intl.com/folders/images/310wingdesign.gif

Not sure about the manual override. Some airplanes have that facility, but most do not. Seems like a reasonable proposition for not being embarrassed by lack of wheel traction/brake effectiveness when the boards don't pop up.

I'd also guess that autobrake wouldn't want to play seriously until the spoilers had had their erection.

[Lu Zuckerman]

The unique wingtip design that improves efficiency was actually designed by Boeing under a NASA contract. The design was given to the French at no cost. However if an American firm wished to use the design they would have to pay a licensing fee.

Have you ever seen an American built jet with the same design?

:ok:

[747FOCAL]

The unique design is old and outdated. The new tips are highly more efficient and these ones will cost the French as well as everybody else. :E

[OVERTALK]

Thanks for answering the question...it's as I suspected.

But does anybody have informed opinions on the other part of the initial post.

i.e. manual override for touchdown spoilers as a backup bootstrap?? Any reason why not (philosophical or technical) - apart from the obstreperous French approach of :

"why spoiler perfection?"

[Volume]

There is a very detailed report (http://www.airbus.com/pdf/customer/fast05/wing.pdf) about the aerodynamic design of the ´modern´ A310 wing back from the 80´s on the Airbus Homepage, which also tells something about the slats. May be an interesting read, but is 1.7 MB large !

[Bus429]

Overtalk,

Was your original question about slats or spoilers/speedbrakes?
I'm confused.:confused: