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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Attributes | |
ACN | 515390 |
Time | |
Date | 200106 |
Day | Thu |
Place | |
Locale Reference | airport : zzz.airport |
State Reference | US |
Altitude | agl single value : 0 |
Aircraft 1 | |
Operator | common carrier : air carrier |
Make Model Name | B767-300 and 300 ER |
Operating Under FAR Part | Part 121 |
Flight Phase | ground : maintenance |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | maintenance : technician |
Experience | maintenance technician : 15 |
ASRS Report | 515390 |
Person 2 | |
Affiliation | company : air carrier |
Function | maintenance : technician |
ASRS Report | 515391 |
Events | |
Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
Independent Detector | other other : person 1 |
Resolutory Action | flight crew : diverted to another airport |
Consequence | faa : investigated other other |
Factors | |
Maintenance | performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : inspection |
Supplementary | |
Problem Areas | Environmental Factor Maintenance Human Performance Aircraft |
Primary Problem | Maintenance Human Performance |
Narrative:
I was assigned an 'a' check on aircraft xxy. I accomplished the engine inspection portion with mechanic. Upon completion of inspection, we closed both cowlings at latch. We requested the #1 cowling to fit an oil service door. Was unable to fit service door due to job procedure time. Then closed and latched cowlings again with mechanic. Later that evening, was informed by supervisor that cowlings from #1 engine had fallen off. I am sure of latching cowling and that it was verified latched by flight crew prior to departure. Callback conversation with reporter revealed the following information: the reporter stated he believes the cowling was latched properly. The reporter said the possibility of the latches being 'false locked' exists. The reporter stated, 'with 15 yrs of experience it's difficult to believe I could dispatch any airplane with an unlocked cowling'.
Original NASA ASRS Text
Title: A B767-300 INCURRED INFLT LOSS OF THE L ENG FAN COWLING AFTER BEING DISPATCHED ON THE FIRST FLT OUT OF AN 'A' SVC CHK.
Narrative: I WAS ASSIGNED AN 'A' CHK ON ACFT XXY. I ACCOMPLISHED THE ENG INSPECTION PORTION WITH MECH. UPON COMPLETION OF INSPECTION, WE CLOSED BOTH COWLINGS AT LATCH. WE REQUESTED THE #1 COWLING TO FIT AN OIL SVC DOOR. WAS UNABLE TO FIT SVC DOOR DUE TO JOB PROC TIME. THEN CLOSED AND LATCHED COWLINGS AGAIN WITH MECH. LATER THAT EVENING, WAS INFORMED BY SUPVR THAT COWLINGS FROM #1 ENG HAD FALLEN OFF. I AM SURE OF LATCHING COWLING AND THAT IT WAS VERIFIED LATCHED BY FLC PRIOR TO DEP. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED HE BELIEVES THE COWLING WAS LATCHED PROPERLY. THE RPTR SAID THE POSSIBILITY OF THE LATCHES BEING 'FALSE LOCKED' EXISTS. THE RPTR STATED, 'WITH 15 YRS OF EXPERIENCE IT'S DIFFICULT TO BELIEVE I COULD DISPATCH ANY AIRPLANE WITH AN UNLOCKED COWLING'.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.