Originally Posted by
Smott999
...if the STS may be providing unwanted/surprising nose-down trim, is the AT also in the grips of unreliable (too slow) IAS, and thus push the throttles? So the crew is dealing w low level nose down plus increasing throttle/overspeed dangers?
Disconnecting and disarming the autothrottles is something you do early in the unreliable airspeed checklist on the Airbuses and Boeings that I've flown. Is there some alpha floor or similar protection in the late model 737's that might still push the throttles up uncommanded?
Originally Posted by
FAMO
Stated in the report that the transcript was not verified. Some correlation to previous theories posted here.
The pilot’s request to change altitude to 5,000 feet was approved by ATC and was requested to maintain altitude at 06:24.58. During this exchange, Bhavye asked the ATC to confirm the plane’s airspeed to which the ATC answered 332 knots.
This ATC reported airspeed is about 40 knots higher than the ADS-B transmitted GPS groundspeed at 06:25 local time. The aircraft does indeed seem to try to maintain 5000 feet after that time.
