How to TOTAL a BA-146 Commuter Plane

[FUBAR]

Received a PowerPoint thingy this morning:

PP slide said:

On Four Engined BA-146s, two engines have hydraulic pumps, and two have electrical generators. If you taxi the airplane only on the two engines with generators, you only have a few brake applications available before the hydraulic accumulators run out of brake pressure.
On the way to the gate, the cockpit voice recorder captures one Pilot saying; “If we go a little faster, then we could get the nose wheel off the ground”.
They were apparently unaware that the Auto Throttles were set in Take-Off mode. (Which disconnects the Brakes). As they approached the gate, they found they had no brakes (a result of being in the Takeoff Power mode) and proceeded to slam through the concourse jetway. Both the aircraft and jetway appeared to be totalled.

PS – BTW - Always remain seated, with your seatbelt fastened, until the aircraft has STOPPED at the gate.

Whoops!

[thatone1967]

Trust the Yanks ( I am assuming here as the plane has a US tail number!)


ps... It's a BAE146...

[The Walrus]

Superb

I would not like to be those pilots have to explain what happened !

[FourWheelDrift]

thatone1967 said:

ps... It's a BAE146...

BAE Systems Avro 146-RJ85A

[dr_gn]

Apparently it wasn't after a flight, it was after a ground maintenence check:

http://aviation-safety.net/database/record.php?id=...

[Hooli]

I hope they had protected NCD

[dvs_dave]

I find it hard to believe that such a situation would be allowed by the aircraft's control system? Only 2 engines running, the throttles able to be set for take-off with no hydraulic pumps running......yea right!

I should think the true explanation is a lot less "stupid americans" like.

[dr_gn]

dvs_dave said:

I find it hard to believe that such a situation would be allowed by the aircraft's control system? Only 2 engines running, the throttles able to be set for take-off with no hydraulic pumps running......yea right!

I should think the true explanation is a lot less "stupid americans" like.

The first post says that the reason for no brakes was that the engines running didn't have hydraulic pumps, but it also says that the Auto Throttles were set in Take-Off mode. (Which disconnects the Brakes), in which case the engine issue was irrelevant (I think).

So which was it? Or was it both?

[dvs_dave]

How could the control systems realistically allow a situation where there were no hydraulic pumps running? Unless of course there was a fault with the system or the safety interlocks had been defeated for some reason?

[dr_gn]

dvs_dave said:

How could the control systems realistically allow a situation where there were no hydraulic pumps running? Unless of course there was a fault with the system or the safety interlocks had been defeated for some reason?

You'd have thought that one each of the inner pair of engines would have had hydraulics, and one of the outer pair would have had hydraulics. Same with generators.

[anonymous-user]

FourWheelDrift said:

thatone1967 said:

ps... It's a BAE146...

BAE Systems Avro 146-RJ85A

Yes looks like N528XJ which was obviously a 1999 British Aerospace AVRO 146-RJ85A, C/N E2353. Obviously.

[davepoth]

the co-pilot said:

Watch this!

[The Big G]

A well known clip by they are well known to be solid little planes

http://www.youtube.com/watch?v=z2A7pgdWHYs

[hurstg01]

The Big G said:

A well known clip by they are well known to be solid little planes

http://www.youtube.com/watch?v=z2A7pgdWHYs

[theboyfold]

Is that the one that's known as the 'Whisper Jet'? I've flown on them more time than I care to remember with Brussels Airlines...

[Eric Mc]

Eastern used to call their Tristars whisper jets.

[shed driver]

FUBAR said:

I glanced at this picture and wondered why Gordon (cyclops) Brown was running away.

SD

[anonymous-user]

The Big G said:

A well known clip by they are well known to be solid little planes

http://www.youtube.com/watch?v=z2A7pgdWHYs

a dab of opposite lock on landing , reminded me of this one from Kai Tak

http://www.youtube.com/watch?v=OtnL4KYVtDE&NR=...

I flew in and out of there a few times in the 80s and the approach was surreal

[HoHoHo]

wsurfa said:

The Big G said:

A well known clip by they are well known to be solid little planes

http://www.youtube.com/watch?v=z2A7pgdWHYs

a dab of opposite lock on landing , reminded me of this one from Kai Tak

http://www.youtube.com/watch?v=OtnL4KYVtDE&NR=...

I flew in and out of there a few times in the 80s and the approach was surreal

Not knowing enough about aircraft structures - would that thump into the deck not be sufficient to bend something?

The arse end nearly touches the ground, (let alone the passengers touching cloth!)

[mattdaniels]

dvs_dave said:

How could the control systems realistically allow a situation where there were no hydraulic pumps running? Unless of course there was a fault with the system or the safety interlocks had been defeated for some reason?

Probably because the two "control systems" sat in the front had pressed the appropriate buttons to configure it like that?