INCIDENT:BRITISH AIRWAYS B744 AT JOHANNESBURG ON MAI 11TH 2009,TWO THRUST REVERSERS INDICATED OPEN,LEADING EDGE FLAPS RETRACTED
The crew of a British Airways Boeing 747-400,registration G-Byga performing flight BA-56 from Johannesburg (South Africa) to London Heathrow,EN (UK),decided to dump fuel and return to Johannesburg after two thrust reversers were indicated unlocked after takeoff.The airplain landed safety about 120 minutes after takeoff.
Engineers determined that the indication was false,the thrust reversers had been properly locked in closed position.
The flight was initially postponed by 23 hours and later cancelled.
New information leaked by aviation sources in South Africa on May 13th - claimed to the based on the readout of the digital flight data recorder,cockpit voice recorder as well as testimony of the flight crew - suggests,that one engine flamed out during rotation for liftoff,another engine uncommandedly rolled back to idle at the same time,two engine thrust reversers indicated unlocked and the leading edge flaps retracted.According to that information the crew levelled of at 35 feet AGL,managed to recover the idle engine and resumed the initial climb out on three engines.Subsequently the crew dumped fuel and returned to Johannesburg for a safe landing.South Africa's Civil Aviation Authority (SA CAA) is reported to have impounded to airplain.
Other aviation sources in South Africa on May 14th also claiming to have seen the developing report by SA CAA deny,that there wase any loss of thrust,no engine flamed out,no engine rolled back to idle.Those sources however confirm,that engine #2 and #3 showed spurious thrust reverser unlocked indications while the airplain was still on the ground causing the leading edge flaps to be automatically retracted by sistem logic.The stick shaker came on at a height of 12 feet,the crew levelled off at about 40 feet,accelerated and continued the climb.At about 160 feet AGL the leading edge flaps came back down to their commanded deployed position.
British Airays declined to comment pointing to the ongoing investigation by South African's Civil Aviation authority and stated,that they are fully cooperating with authorities of South Africa.
South Africa's Civil Aviation Authority could not yet be reached for comment regarding the information of May 13th and 14th.
http://avherald.com/h?article=4198598d&opt=0
The crew of a British Airways Boeing 747-400,registration G-Byga performing flight BA-56 from Johannesburg (South Africa) to London Heathrow,EN (UK),decided to dump fuel and return to Johannesburg after two thrust reversers were indicated unlocked after takeoff.The airplain landed safety about 120 minutes after takeoff.
Engineers determined that the indication was false,the thrust reversers had been properly locked in closed position.
The flight was initially postponed by 23 hours and later cancelled.
New information leaked by aviation sources in South Africa on May 13th - claimed to the based on the readout of the digital flight data recorder,cockpit voice recorder as well as testimony of the flight crew - suggests,that one engine flamed out during rotation for liftoff,another engine uncommandedly rolled back to idle at the same time,two engine thrust reversers indicated unlocked and the leading edge flaps retracted.According to that information the crew levelled of at 35 feet AGL,managed to recover the idle engine and resumed the initial climb out on three engines.Subsequently the crew dumped fuel and returned to Johannesburg for a safe landing.South Africa's Civil Aviation Authority (SA CAA) is reported to have impounded to airplain.
Other aviation sources in South Africa on May 14th also claiming to have seen the developing report by SA CAA deny,that there wase any loss of thrust,no engine flamed out,no engine rolled back to idle.Those sources however confirm,that engine #2 and #3 showed spurious thrust reverser unlocked indications while the airplain was still on the ground causing the leading edge flaps to be automatically retracted by sistem logic.The stick shaker came on at a height of 12 feet,the crew levelled off at about 40 feet,accelerated and continued the climb.At about 160 feet AGL the leading edge flaps came back down to their commanded deployed position.
British Airays declined to comment pointing to the ongoing investigation by South African's Civil Aviation authority and stated,that they are fully cooperating with authorities of South Africa.
South Africa's Civil Aviation Authority could not yet be reached for comment regarding the information of May 13th and 14th.
http://avherald.com/h?article=4198598d&opt=0
