.JPG) |
| TUI AIRLINES BOEING 737 MAX 8 PH-TFT (MSN 44610) |
BY-6114 was departing Bristol's runway 09 on the 4th of March, when the autothrottle disengaged upon selection of TO/GA at the start of the takeoff roll. The crew manually set the thrust to 84.5% N1 (rather than 92.8% N1 as needed) and continued the takeoff. Neither pilot noticed the potentially fatal lack of power needed to safely take off. (TO/GA is an autopilot/autothrottle setting activating take-off or go-around thrust. Depending upon aircraft type, it may be activated by depressing a switch or by manually moving the thrust levers to the appropriate position.)
The 15-year-old jet took off with just 260 metres (853ft) of runway remaining, clearing the end of the tarmac at a height of just 10 feet. It then passed over the nearby A38 road at less than 100 feet. When the wheels of the aircraft finally left the ground, it was travelling at around 150kts - meaning it would have run out of runway three seconds later.
The Air Accidents Investigation Branch of the Department of Transport is investigating the incident which it describes as 'serious'. They have released a special warning to airlines using the Boeing 737-800 next generation series about the software problem which jeopardised the safety of the flight.
The report said Boeing were aware of the software glitch before the incident which saw the aircraft struggling to get into the air. According to the AAIB report: 'A Boeing 737-800 completed a takeoff from Runway 09 at Bristol Airport with insufficient thrust to meet regulated performance.'
A review of problems on the affected flight showed 11 errors - many of those were related to the aircraft's autothrottle system. The data showed the system, which is designed to reduce the workload of the flight crew, disengaged twice on the flight.
Aircraft Information:
The 15-year-old jet took off with just 260 metres (853ft) of runway remaining, clearing the end of the tarmac at a height of just 10 feet. It then passed over the nearby A38 road at less than 100 feet. When the wheels of the aircraft finally left the ground, it was travelling at around 150kts - meaning it would have run out of runway three seconds later.
The Air Accidents Investigation Branch of the Department of Transport is investigating the incident which it describes as 'serious'. They have released a special warning to airlines using the Boeing 737-800 next generation series about the software problem which jeopardised the safety of the flight.
The report said Boeing were aware of the software glitch before the incident which saw the aircraft struggling to get into the air. According to the AAIB report: 'A Boeing 737-800 completed a takeoff from Runway 09 at Bristol Airport with insufficient thrust to meet regulated performance.'
A review of problems on the affected flight showed 11 errors - many of those were related to the aircraft's autothrottle system. The data showed the system, which is designed to reduce the workload of the flight crew, disengaged twice on the flight.
Aircraft Information:
Airline: TUI Airways
Code: BY/TOM
Aircraft: Boeing 737-8K5
Registration: G-FDZS
Serial Number: 35147
Engines: 2 x CFMI CFM56-7B27
First Flew: 30/03/2009
Age: 15.3 Years
No comments:
Post a Comment