View Full Version : Ethiopian Airlines 787 nose gear collapse
Arewerunning
4th Mar 2016, 07:42
It seems that a 787, ready to depart to FCO after pax boarding was completed, experienced a nose gear collapse. One FA was injured.
Regards
shaun.s
4th Mar 2016, 09:01
Could be interesting... do you have any links?
Arewerunning
4th Mar 2016, 09:07
Could be interesting... do you have any links?
Nope. But I have eye witness
Metro man
4th Mar 2016, 11:15
Not having the best of luck at the moment with the aircraft striking the airbridge in Harare less than two weeks ago.
ALERT Ethiopian Airlines Dreamliner flight impacted a jet bridge at Harare, Zimbabwe | AIRLIVE.net (http://www.airlive.net/alert-ethiopian-airlines-dreamliner-flight-impacted-a-jet-bridge-at-harare-zimbabwe/)
testpanel
4th Mar 2016, 17:35
Accident: Ethiopian B788 at Addis Ababa on Mar 4th 2016, nose gear collapsed at gate (http://avherald.com/h?article=494e6383&opt=0)
atakacs
4th Mar 2016, 18:45
Is it the same aircraft in both cases?!
Mad (Flt) Scientist
4th Mar 2016, 19:20
Is it the same aircraft in both cases?!
Not according to the regs quoted in the two linked articles - AOQ and ASH
Airbubba
4th Mar 2016, 20:00
Was it the improperly pinned nosegear on a maintenance test perhaps?
I saw this impressive demo years ago on a B-742 in SIN.
msbbarratt
5th Mar 2016, 18:27
Was it the improperly pinned nosegear on a maintenance test perhaps?
The original post said that it was loaded with passengers and ready to go. It was probably not a test!
Teddy Robinson
5th Mar 2016, 18:56
Brakes released, pressure zero, you are cleared to push.
That's what normally happens ... right ?
Teddy,
What instrument do you see pressure zero indicated on a 787?
Teddy Robinson
5th Mar 2016, 20:37
Dear Cough,
I'm not rated on this aircraft, perhaps somebody who is could comment further.
Somehow, and by an established procedure, it is a good idea to ensure that the brakes are released before commencing a push, no ?
drag king
5th Mar 2016, 20:58
What instrument do you see pressure zero indicated on a 787?
Perhaps he meant a similar procedure to the Bus when the a/c is taxing to confirm the Y HYD isn't doing the breaking anymore (i.e. the PB)?
DK ;)
what pressure ? electric brakes........
Teddy Robinson
5th Mar 2016, 21:32
Presuming one is commanding one's B787, how does one deduce that the brakes are released prior to instructing the ground team to commence the pushback ? or does a "special light" come on in the tug :rolleyes:
drag king
5th Mar 2016, 21:54
Presuming one is commanding one's B787, how does one deduce that the brakes are released prior to instructing the ground team to commence the pushback ? or does a "special light" come on in the tug :rolleyes:
No idea about the Dreamliner (as someone suggested it's fitted with electric breakes, thus one-in-a-kind...no rated so I pass) but on the Bus there is a triple-indicator gauge that tells you ACCU PRESS (1 indicator) and YELLOW HYD PRESS (2 indicators) and when the PB is OFF, if everything works correctly, the pilot taxing gives the pedal a squeeze: if the 2 indicators read zero then pressure is supplied by the G HYD thus everything works OK and there is no residual pressure on the PB. Not speculating anything tho, in fact the 787 is a totally different beast...
However if this was a pushback-accident, I would say that in order to snap the gear's links, the breaks must have bitten after the a/c was moving at a steady speed.
Tea and cookies with the CP...must wear the hat!
DK :{
Teddy Robinson
5th Mar 2016, 22:09
What came to mind was the candid recollection of one of the first line trainers I had "a while ago". On his first command sector he called pressure zero and didnt release the brakes, the nosegear folded neatly. But point taken, the 787 has plenty of inertia, so that scenario doesn't seem very likely.
AEROJUANCA
5th Mar 2016, 23:50
Presuming one is commanding one's B787, how does one deduce that the brakes are released prior to instructing the ground team to commence the pushback ? or does a "special light" come on in the tug :rolleyes:
EICAS memo mesagge: Parking Brakes, and all "Gear" related info on multifunction display.
Red and Blue lights in the NLG too.
Teddy Robinson
6th Mar 2016, 00:30
fair (informed) comment .. we shall wait further.
iskyfly
6th Mar 2016, 00:57
my only reply on this;
While troubleshooting a fault message someone was not following procedure and accidentally retracted the gear.
Take it or leave it.
Airbubba
6th Mar 2016, 03:33
Was it the improperly pinned nosegear on a maintenance test perhaps?
I saw this impressive demo years ago on a B-742 in SIN.
While troubleshooting a fault message someone was not following procedure and accidentally retracted the gear.
That's probably the most familiar story with these inadvertent widebody gear retractions prior to taxi. In the 747 incident I saw an Airbus pin was used to secure a Boeing nosegear. And, as a locally made modification, a handle was welded to the pin to snag on something when the gear doors started to open. Out went the pin and up went the nosegear. The gear doors were being cycled to check the rigging or check for leaks according to the ground engineers.
Here's another more recent incident in SIN:
A Singapore Airlines Airbus plane collapsed on its nose on Sunday morning at Changi Airport.
The nose gear of an Airbus A330-300 "retracted while the aircraft was undergoing a landing gear system check," the airline said in a statement.
"There were no passengers or crew on board at the time," Singapore Airlines said, according to the Associated Press.
Singapore Airlines plane collapses on nose at Changi Airport - NY Daily News (http://www.nydailynews.com/news/world/singapore-airlines-plane-collapses-nose-changi-airport-article-1.2393345)