Originally posted by 3WE
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It didn't make a difference for the 1st LionAir crew that successfully handled the situation following the "normal" trim runaway procedure despite the system not being known.
And it didn't make a difference either for the Ethiopian crew that crashed the plane after the system, its vulnerabilities and how to deal with its failures had been disseminated all over the place in Tele Vision, newspapers, internet fora, a preliminary accident report, a Boeing service bulletin and a Federal Aviation Agency's Emergency Airworthiness Directive (there, no acronyms).
DC-9 pilots had to learn that pulling a cabin pressure CB at the wrong time also popped the ground spoilers.
The spoilers system and the air-ground mode system where described in the manual and it was deductible from the explanation in the manual that this would happen. Add they still did it.
Which kinda proves my point.
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