ttesna

Any news on the runway excursion to the left hand side of the runway onto the grass arround the 6000 ft mark by the B744-F .

MD11F

ttesna

Finally some feed back on this one.
After landing reverse was selected on all 4 engines.No big beal there.
Nos 1,2,3 ENGINES went into reverse,(green)NO 4 DID NOT.Capt attempted to recycle no 4 engine,instead accidently hit TOGA.The rest is history.a/c fully left the runway.The a/c is still in Seoul.
Am told a serious amount of damage on all 4 engine.etc

NSEU

I find this interesting, as Boeing logic should inhibit the autothrottle with any engine in reverse.

Rgds.
NSEU

wotsitdoin

Plane finished on the grass, pointing 90 deg off runway heading with No.4 at take off power which wasn't noticed by the pilot. No.4 engine stuffed, 3,2,1 semi-stuffed. Investigation on-going.

manrow

Careful how you phrase it NSEU, otherwise the media will insist that all Boeings are grounded until the problem is identified!

Jesper

The autothrottle is inhibit on the engines with reversers activated, but no.4 wasnt even activated from what i read

NSEU

The 747-400 only has one autothrottle servomotor for all four engine thrust levers. If one engine in reverse inhibits the autothrottle, then TOGA shouldn't activate.

Maybe we should ground all press until their problems have been indentified

Capt Chambo

Still parked up at ICN. Engines 1&2 are still off the wing. (Cannot see the right wing so cannot confirm if engines 3&4 are off the wing also!)

ttesna

The point here gentlemen and or ladies is that you dont PULL reverse thrust untill all reversers are unlocked.
I didnt mean to have a slanging match with the boffin heads over this one,however.
In my manual it says( and i dont know wether the auto pilot was engaged or not in this case)

QUOTE. UNDER THE ROLLOUT section.:

During rollout ,autothrotttle IDLE mode remains active UNTIL the autothrottle disconnects with the THRUST LEVERS in reverse.

NOTE. Ten seconds after reverse thrust levers are DOWN (it doesnt say all 4)
autothrottle is ARMED until flaps are up. Pushing...A ...(IE ONE) toga switch while the autothrottle is armed activates the autothrottle in THR REF MODE.

Chew on that one

NSEU

If this is the exact text from the manual? The word "levers" suggests more than one. Only one lever was down.

Why would Boeing design an aircraft to go into takeoff mode with any lever in reverse?

Rgds.
NSEU.

ttesna

Good point I was waiting for the JOKER.

faheel

Guys concerned are probably in the can right now !
koreans fine you for anything, I shudder to think what they have be fined for this incident

flylikeaneagle

It doesn't say ALL FOUR but assuming it is a four engine aircraft, I believe Boeing wants to say "Ten sec after (all four) thrust levers are down..."