EFATO
BIG BURD
The Emerald Airways accident at STN is interesting comparison. The crew actions were praised by AAIB although they contravened OPS procedures.
The above statement is not correct.
The crew did not contravene OPS procedures. The Emerald OPS manual clearly stated that it was at the captain's discretion to land back on if this was the safest option.
Whilst the HS748 is a Perf. A aircraft, the length of RW23 at STN was more than twice the accelerate/stop distance required at the WAT, and the take off was from the start of the runway, not an intersection.
The uncontained failure was a catastrophic event, depositing the turbine compressor wheel on the runway, the wheel had exited the cowling vertically severing fuel lines, hydraulics and fire protection system, spilling burning fuel over the wing an undercarriage. While the severe fire that followed was rapidly burning through the main spar. On the flightdeck, there was no fire warning, audible or visual, until the arcraft had safely landed back on the runway and just before the overrun onto the grass. All 46 pax and 4 crew walked away uninjured, hence the praise you refer to.
This is an identical incident with the same type of engine the Rolls Royce Dart
]The Transportation Safety Board of Canada report number H90001, Quebecair F27B CF-QBL Flight No 255[/B]Fatal accident at Quebec City Airport, 29 March 1979
The flight lasted 1min 12secs fourteen passengers and three crew died in the crash.
"At time 36 seconds(after brake release) there was a loud bang from the right engine as it disintegrated and a severe fire developed. The aircraft was at approximately 103 kts and 40 feet above the runway.
time 42 The captain started the engine failure/fire emergency drill.
At time 45 the tower controller who had noticed flames from the right engine advised flight 255 that the right engine was on fire and authorised them to land on any runway.
From time 50 to 1:05 the crew attempted to raise the landing gear which never came up.
The aircraft climbed to about 120 feet above the runway elevation and started a right turn, apparently in an attempt to complete a short circuit, remain visual and execute an emergency on the airport.
At time 1:14 the captain called for the propeller to be feathered. Up to this point the crew did not know that the right engine had separated at the first stage impeller and the forward section of the engine along with the forward section of the engine along with the propeller and some cowling had fallen onto the runway
At time 1:24 the No 1 fire bottle was fired and the aircraft continued in a right turn at about 100 feet above the terrain at a very low airspeed. The engine fire continued.
As the aircraft approached the College de Sacre Coeur, the angle of bank increased and the aircraft started to descend until impact.
Impact occured in a nose down, right wing low attitude at approximately 80 kts.
A fierce fire broke out and most of the fuselage forward of the wing was consumed by fire."
There but for the grace of God.