Eng 1 Stall Ecam Message And Eng 2 Stall Ecam Message, Dual Loss Of Thrust Control
This email arrived from Toulouse, to all operators.
DUAL LOSS OF THRUST CONTROL.
FROM : AIRBUS CUSTOMER SERVICES TOULOUSE
TO : ALL A330 GE PW RR OPERATORS
OPERATORS INFORMATION TELEX - OPERATORS INFORMATION TELEX
TO: A330 OPERATORS
SUBJECT: ATA 71 - ENG 1 STALL ECAM MESSAGE AND ENG 2 STALL ECAM MESSAGE,
DUAL LOSS OF THRUST CONTROL
OUR REF: *********, DATED April 16, 2010
CLASSIFICATION: AIRWORTHINESS
1. PURPOSE
The purpose of this telex is to report an event of engine 1 ECAM stall
message and engine 2 ECAM stall message followed by loss of thrust
control
on both engines.
2. DESCRIPTION
During approach, Eng 1 & 2 Control System faults, Eng 1 Stall and Eng 2
Stall ECAM messages were set. The ECAM Stall message is normally
associated with an engine compressor surge.
The engines did not respond correctly to throttle commands. Autothrottle
was disengaged. At this point engine 1 was operating above idle and
engine
2 was operating sub-idle. The crew issued a Mayday emergency call and
made
an emergency landing during which the engine 1 cowling scraped the
runway.
Upon landing the fire services attended the aircraft; due to concerns
regarding smoke from the wheels and brakes an emergency evacuation of
the
aircraft was commanded.
The event is under investigation by the Hong Kong Civil Aviation
Department
assisted by the UK Air Accident Investigation Branch (AAIB), the French
Air
Accident Bureau (BEA), Airbus and Rolls-Royce.
3. ANALYSIS
PFR, DAR/DFDR and ACMS report data is being analysed by the
investigation
team and fuel samples have been sent to the laboratory for analysis. In
addition the FMU's will be removed and returned to the Supplier for
investigation.
The investigation will examine all aspects related to the flight.
Based on the current analysis, Airbus and Rolls-Royce consider that, at
this stage in the investigation, there is no immediate fleetwide action
required.
4. FOLLOW-UP PLAN
Airbus will update this OIT when final results from the analysis are
available or by end of June 10 at the latest subject to agreement from
the
investigating authority.