Kaitak From Ireland, joined Aug 1999, 12817 posts, RR: 34 Posted (5 years 11 months 2 weeks 3 days 17 hours ago) and read 5876 times:
The British AAIB has issued its accident report on the Thomsonfly stall incident at BOH, which happened about two years ago; it's an extremely detailed report into what could have been a catastrophic accident. I'll post the link to the AAIB site which contains the report, as it's broken down into different sections.
Basically, a Thomsonfly 733, G-THOF, made an approach to BOH at the end of a flight from FAO in September 2007. During this approach, the A/T disengaged (uncommanded), but this was not recognised by the crew*. The events which followed are frightening:
"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."
44 degrees pitch. 82 knots.
Even a 757 on takeoff wouldn't reach 20 degrees of pitch. 44 degrees is simply incredible. The crew nonetheless managed to recover and land safely at BOH.
*Although obviously not referred to in the AAIB report, there are some similarities between this and the Turkish 738 incident at AMS, earlier this year.