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A B747-400 was dispatched in non compliance with #4 engine oil cap not secured. Partial loss of engine oil occurred.
| Attributes | |
| ACN | 581685 |
| Time | |
| Date | 200305 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 1 maintenance technician : 25 |
| ASRS Report | 581685 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : company policies non adherence : far |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Weather Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On may/thu/03, I svced engine oil on air carrier X flight abcd on through flight. 2 quarts oil were added to each engine, the oil service caps secured then the oil service door closed and secured. To the best of my knowledge all 4 engine oil caps were secured after servicing at ZZZ. When aircraft arrived at ZZZ1 #4 engine oil cap was found unsecure causing partial loss of oil quantity.
Original NASA ASRS Text
Title: A B747-400 WAS DISPATCHED IN NON COMPLIANCE WITH #4 ENG OIL CAP NOT SECURED. PARTIAL LOSS OF ENG OIL OCCURRED.
Narrative: ON MAY/THU/03, I SVCED ENG OIL ON ACR X FLT ABCD ON THROUGH FLT. 2 QUARTS OIL WERE ADDED TO EACH ENG, THE OIL SVC CAPS SECURED THEN THE OIL SVC DOOR CLOSED AND SECURED. TO THE BEST OF MY KNOWLEDGE ALL 4 ENG OIL CAPS WERE SECURED AFTER SVCING AT ZZZ. WHEN ACFT ARRIVED AT ZZZ1 #4 ENG OIL CAP WAS FOUND UNSECURE CAUSING PARTIAL LOSS OF OIL QUANTITY.
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.