The UK’s Air Accidents Investigation Branch’s preliminary report on the May 24 incident involving a British Airways Airbus A319 at London Heathrow (LHR) appears to point to inadequate ground maintenance and pre-flight checking. In a special bulletin issued on May 31, the AAIB confirmed that the fan cowl doors on both engines had been left unlatched after maintenance. Just after liftoff, both engine cowlings separated from the aircraft, causing damage that eventually led to one engine fire and shutdown.
Air Accidents Investigation Branch
The UK’s Air Accidents Investigation Branch (AAIB) published a further “special bulletin” late last week in its investigation into the controlled ditching of a Bond-operated EC225 medium twin in May in the North Sea, confirming an earlier hint by Eurocopter that the emergency lubrication system gave the pilots a false failure warning.
Eurocopter has issued a statement that essentially clears operator Bond Offshore Helicopters in the ditching of an EC225 medium twin in the North Sea last month. “At this stage of the investigation, neither procedure failure nor human error on the operator’s side have been identified as a potential contributor to the cause of the incident,” the manufacturer said.
A Eurocopter EC225 operated by Bond Offshore Helicopters with 14 on board ditched safely into the North Sea on May 10. At 12:13 p.m., G-REDW made “a controlled descent 24 nm offshore,” according to Bond. The investigation is focusing on the failures of two main-gearbox lubrication systems–the standard one and the back-up one.
The EASA issued an emergency Airworthiness Directive for Eurocopter EC225 medium-twin helicopters, requiring operators to closely monitor vibrations. The emergency action stems from a May 10 incident involving an EC225 operated by Bond Offshore Helicopters, which safely ditched, with 14 on board, into the North Sea. Under the AD, those EC225s not equipped with vibration health monitoring are restricted to day VFR for flights over water.
The final report issued by the UK’s Air Accident Investigation Branch (AAIB) after the 2009 crash of a Bond-operated Eurocopter AS332 L2 Super Puma in the North Sea is highlighting imperfections in the main gearbox’s design and, maybe more important, in monitoring systems and maintenance programs.
The UK’s Air Accidents Investigation Branch (AAIB) yesterday released its incident report on the near midair of a German-registered Cessna Citation CJ1 and a Turkish Airlines Boeing 777 on the afternoon of July 27, 2009, after the business jet crew climbed too quickly after taking off from London City Airport.
Cessna Citation 500, London, UK, March 8, 2008–A missing rivet head
Cessna 525 Citation, Leeds, UK, June 7, 2010–A fire in the starboard engine caused the twinjet to abort its takeoff from Leeds-Bradford International Airport. The CJ1+ then overshot the runway and came to rest near the airport’s perimeter fence. The pilot and copilot were rescued by a local fire department. The crew suffered minor injuries, and the airplane was substantially damaged.
A final report from the UK Air Accidents Investigation Branch (AAIB) said a missing rivet head on a fuel shutoff valve that likely led to inadvertent engine shutdown was one of four “contributory factors” that resulted in the crash of a Cessna Citation 500 on March 8 some two miles northeast of London Biggin Hill Airport.