What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-5) Number four engine was changed at narita, japan on February 27, 1999. The last known opening and closing of #4 engine cowling was accomplished after this engine change. The aircraft made one flight from narita, japan to Seattle, WA without incident. Ground crew reported no deficiencies during the line check inspection of the #4 engine cowl door latches at Seattle. On takeoff, at Seattle, the outboard cowl door came off and the inboard cowl door collapsed in place around the engine. Damage to lower cowl door latches forward to aft, #1, #2, #5 & #6, show no catastrophic damage to latch attach structure, hook or "u" catch. On latches #3 & #4, the securing latch attach structure was torn from the cowling structure. Upper forward track arm, of outboard cowl door, fractured in the arm track. Note: airframe hours and cycles were as of 24 mar 99.
As the FAA filed it
(-5) NUMBER FOUR ENGINE WAS CHANGED AT NARITA, JAPAN ON FEBRUARY 27, 1999. THE LAST KNOWN OPENING AND CLOSING OF #4 ENGINE COWLING WAS ACCOMPLISHED AFTER THIS ENGINE CHANGE. THE AIRCRAFT MADE ONE FLIGHT FROM NARITA, JAPAN TO SEATTLE, WA WITHOUT INCIDENT. GROUND CREW REPORTED NO DEFICIENCIES DURING THE LINE CHECK INSPECTION OF THE #4 ENGINE COWL DOOR LATCHES AT SEATTLE. ON TAKEOFF, AT SEATTLE, THE OUTBOARD COWL DOOR CAME OFF AND THE INBOARD COWL DOOR COLLAPSED IN PLACE AROUND THE ENGINE. DAMAGE TO LOWER COWL DOOR LATCHES FORWARD TO AFT, #1, #2, #5 & #6, SHOW NO CATASTROPHIC DAMAGE TO LATCH ATTACH STRUCTURE, HOOK OR "U" CATCH. ON LATCHES #3 & #4, THE SECURING LATCH ATTACH STRUCTURE WAS TORN FROM THE COWLING STRUCTURE. UPPER FORWARD TRACK ARM, OF OUTBOARD COWL DOOR, FRACTURED IN THE ARM TRACK. NOTE: AIRFRAME HOURS AND CYCLES WERE AS OF 24 MAR 99.
Other reports on N612US · 5
Matched to the same aircraft by N-number and date.