What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On 02/14/2002, ixxa mechanics removed and replaced the #2 engine bleed air regulator valve in order to correct a deferral on that system. The new valve did not correct the problem, so the deferral was continued. At the end of the day shift, after the item was approved for return to service, it was determined that the mechanics had failed to re-deactivate the system in accordance with ixxa MEL requirements. One ixxa mechanic returned to the aircraft, opened the #2 engine cowls, deactivated the high stage bleed valve, and started to close the engine. Another mechanic assisted closing the core cowls (reverser cowls) and one fan cowl, but left to finish a walk-around. The mechanic working the #2 engine assumed that the mechanic who assisted him with the cowls also latched the fan cowls. The assumption was not correct. Both mechanics returned to the ixxa office, unaware of their error. During preparation for launch, the f/e accomplished his originating preflight, but did not notice that the #2 engine fan cowls were unlatched. On takeoff, the fan cowls opened and were torn off by the slipstream, coming to rest on the runway. The aircraft returned to mco, executing an uneventful landing.
As the FAA filed it
(-23) ON 02/14/2002, IXXA MECHANICS REMOVED AND REPLACED THE #2 ENGINE BLEED AIR REGULATOR VALVE IN ORDER TO CORRECT A DEFERRAL ON THAT SYSTEM. THE NEW VALVE DID NOT CORRECT THE PROBLEM, SO THE DEFERRAL WAS CONTINUED. AT THE END OF THE DAY SHIFT, AFTER THE ITEM WAS APPROVED FOR RETURN TO SERVICE, IT WAS DETERMINED THAT THE MECHANICS HAD FAILED TO RE-DEACTIVATE THE SYSTEM IN ACCORDANCE WITH IXXA MEL REQUIREMENTS. ONE IXXA MECHANIC RETURNED TO THE AIRCRAFT, OPENED THE #2 ENGINE COWLS, DEACTIVATED THE HIGH STAGE BLEED VALVE, AND STARTED TO CLOSE THE ENGINE. ANOTHER MECHANIC ASSISTED CLOSING THE CORE COWLS (REVERSER COWLS) AND ONE FAN COWL, BUT LEFT TO FINISH A WALK-AROUND. THE MECHANIC WORKING THE #2 ENGINE ASSUMED THAT THE MECHANIC WHO ASSISTED HIM WITH THE COWLS ALSO LATCHED THE FAN COWLS. THE ASSUMPTION WAS NOT CORRECT. BOTH MECHANICS RETURNED TO THE IXXA OFFICE, UNAWARE OF THEIR ERROR. DURING PREPARATION FOR LAUNCH, THE F/E ACCOMPLISHED HIS ORIGINATING PREFLIGHT, BUT DID NOT NOTICE THAT THE #2 ENGINE FAN COWLS WERE UNLATCHED. ON TAKEOFF, THE FAN COWLS OPENED AND WERE TORN OFF BY THE SLIPSTREAM, COMING TO REST ON THE RUNWAY. THE AIRCRAFT RETURNED TO MCO, EXECUTING AN UNEVENTFUL LANDING.
Other reports on N830BX · 1
Matched to the same aircraft by N-number and date.