Post by Mike
So it seems there is no operational or structural problems with this
aircraft so they are modifying the software on the anti-stall system for
When climbing away from take off the nose points up in the air. The anti-stall system
thinks the driver is trying to hard and the anti-stall software kicks in and the driver
either does not know or does not understand how to over-ride the software. So the plane
does its auto-anti-stall procedure and crashes.
Seems like the software is a little too keen on preventing a stall.
Husbad informs me he understands the problem is not simply with the software, but with the
relevant sensors on the plane. The pilot can try to over-ride the software manually but
the faulty sensors will insist and continue to give the wrong info to the software, which
then overrides the pilot again automatically despite the pilot doing everything he can to
adjust the anti-stall mechanism. Hence crash. Not pilot error.
Husbad is not talking through his hat as he trained as an aeronautical engineer and is
still in the aircraft business, though not much hands on any more. Were these planes not
already grounded, husbad would refuse to fly on one if he were due to travel on a route
which used them. This is, I think, the first time I have heard the husbad say this in
relation to a specific aircraft model (as opposed to an airline whose maintenance might
not be the best on the aircraft they use). He says as far as he can gather, the Air
Ethiopia pilot was experienced and properly trained on the aircraft and Air Ethiopia in
general are a good airline.
Anne, Exceptionally Traditionally-built Dumrat