Quote:
Originally Posted by captnmajic
Their problems were so bad that my understanding is after landing the fire department had a difficult time assisting in the evacuation of the jet as they were unable to safely approach it because the engines continued running, even after running off the end of the runway and pilots who wanted them shut down. .
The crew had a problem with the electrical system. They turned the standby power switch to "battery" which isolates the standby busses to the battery, and prevents the battery from receiving a charge. The boeing checklist does not state "land at nearest suitable airport" for this, but it should have. (it does now!)
The reason the pilots couldn't turn off the engines is because that function is controlled by the standby busses (power that you are never supposed to lose). They had drained the battery down to nothing, and the engine generators could not power those busses since the pilots isolated them.
The biggest problem I have with all of this is that the captain decided to land on 22R at ORD. He had an active runway that was 13,000 feet long, and he landed on a 7,500 foot runway. He ALMOST got it stopped in 7,500 feet! If he would have chosen a longer runway, we would not be talking about this right now.
Multiple system failures and you choose a short runway.....that's hard to understand.