Ed Dartford
Well-Known Member
Does this sound familiar?
At 12:42:27 the aircraft made a sudden uncommanded pitch down manoeuvre, recording −0.8 g, reaching 8.4 degrees pitch down and rapidly descending 650 feet (200 m) in about 20 seconds before the pilots were able to return the aircraft to the assigned cruise flight level. At 12:45:08 the aircraft then made a second uncommanded manoeuvre of similar nature, this time reaching +0.2 g, 3.5 degrees pitch down and descending 400 feet (120 m) in about 16 seconds before being returned to level flight.[14][15] Unrestrained passengers and crew as well as some restrained passengers were flung around the cabin or crushed by overhead luggage as well as crashing with overhead compartments. The pilots stabilised the plane and declared a state of alert (pan-pan), which was later updated to maydaywhen the extent of injuries was relayed to the flight crew.[8][16]
Caused by bad AOA data and software intended to prevent a stall. Three A330 planes experienced the upset. None crashed.
For the full story go to...https://en.wikipedia.org/wiki/Qantas_Flight_72
At 12:42:27 the aircraft made a sudden uncommanded pitch down manoeuvre, recording −0.8 g, reaching 8.4 degrees pitch down and rapidly descending 650 feet (200 m) in about 20 seconds before the pilots were able to return the aircraft to the assigned cruise flight level. At 12:45:08 the aircraft then made a second uncommanded manoeuvre of similar nature, this time reaching +0.2 g, 3.5 degrees pitch down and descending 400 feet (120 m) in about 16 seconds before being returned to level flight.[14][15] Unrestrained passengers and crew as well as some restrained passengers were flung around the cabin or crushed by overhead luggage as well as crashing with overhead compartments. The pilots stabilised the plane and declared a state of alert (pan-pan), which was later updated to maydaywhen the extent of injuries was relayed to the flight crew.[8][16]
Caused by bad AOA data and software intended to prevent a stall. Three A330 planes experienced the upset. None crashed.
For the full story go to...https://en.wikipedia.org/wiki/Qantas_Flight_72
