Probable Cause

[orangehuggy]

This is a good one, well done Indonesia:

Inconsistency to the Aircraft Maintenance Manual (AMM) for therectifications performed during the period of the reversers and auto speed brakedeployment problem was might probably result of the unsolved symptomproblems.

http://knkt.dephub.go.id/knkt/ntsc_aviation/baru/Final%20Report%20PK-LIQ.pdf

anyone care to rephrase?

[Evan]

This is a good one, well done Indonesia:

Inconsistency to the Aircraft Maintenance Manual (AMM) for therectifications performed during the period of the reversers and auto speed brakedeployment problem was might probably result of the unsolved symptomproblems.

http://knkt.dephub.go.id/knkt/ntsc_aviation/baru/Final%20Report%20PK-LIQ.pdf

anyone care to rephrase?

Sure. What they mean to say is that the operator and the pilots were aware that the aircraft had problems with selection of thrust reversers and automatic speed brake deployment. The problem had been reported 13 times, but they opted to keep it in service.

I mean what could go wrong...

And then, whilst touching down long on a rain-contaminated runway due to a continued unstable approach that should have been abandoned, the crew couldn't get the gosh-darned ground spoilers up or actuate the reversers.

What a surprise that must have been.

Some airlines are going to bend planes no matter what you do.

[brianw999]

Bending a plane is bad enough. The really serious problems comes when they bend the plane AND kill or injure people.

[Gabriel]

Bending a plane is bad enough. The really serious problems comes when they bend the plane AND kill or injure people.

Cause ==> Failure mode (problem) ==> Severity (consequence)

Don't confuse them. The same (or similar) problem can have different consequences, some times just because of luck or randomness.

In Arg we had a Fokker F-28 pax jet that busted minimums and crashed into trees. Everybody escaped with no more than minor injuries.
Some years later a DC-9 pilot busted minimums and crashed into trees. Everyone perished.

The problem was the same: The pilot busted minimum. The consequences were very different. (and the causes, well, that's a different animal)

That's why I don't understand why the aviation industry is not responding more strongly to the many cases of wrong take-off performance every year. We cannot wait until the next big fatal crash that WILL happen to say "now we have a problem". We have the problem NOW. And people WILL eventually die (again) if we do nothing.

[Evan]

That's why I don't understand why the aviation industry is not responding more strongly to the many cases of wrong take-off performance every year.

$$$$$ + apathy - vision
___________________ = (lack of regulation)
(acceptable losses)