PPRuNe Forums - View Single Post - How safe is (airbus) fly by wire? Airbus A330/340 and A320 family emergency AD
Old 1st Jan 2013, 15:26
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rudderrudderrat
 
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Bengerman,
If the pilot of an airbus FBW does nothing more than push the thrust levers to TOGA then the aircraft will accelerate into the ground.
If the pilot of a 737 does exactly the same, then he may stall due to the pitch power couple.
http://www.aaib.gov.uk/cms_resources...OF%2006-09.pdf

"The Boeing 737-300 was on approach to Bournemouth Airport following a routine passenger flight from Faro, Portugal. Early in the ILS approach the auto-throttle disengaged with the thrust levers in the idle thrust position. The disengagement was neither commanded nor recognised by the crew and the thrust levers remained at idle throughout the approach. Because the aircraft was fully configured for landing, the air speed decayed rapidly to a value below that appropriate for the approach. The commander took control and initiated a go-around. During the go-around the aircraft pitched up excessively; flight crew attempts to reduce the aircraft’s pitch were largely ineffective. The aircraft reached a maximum pitch of 44º nose-up and the indicated airspeed reduced to 82 kt. The flight crew, however, were able to recover control of the aircraft and complete a subsequent approach and landing at Bournemouth without further incident."

Would you agree that both crews need to control the pitch attitude?

Last edited by rudderrudderrat; 1st Jan 2013 at 15:31.
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