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A B737-300 was found to have #4 fairing hanging from the wing. Fairing was installed and inspected 14 days prior to separation.
| Attributes | |
| ACN | 556100 |
| Time | |
| Date | 200207 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Qualification | technician : inspection authority |
| ASRS Report | 556100 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : logbook entry performance deficiency : installation performance deficiency : repair |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On jul/mon/02, worked as an inspector assigned left wing on aircraft. On jul/sun O2, panel 33501 (#4 canoe fairing) separated from aircraft -- found dangling upon landing in ZZZ. I was the inspector responsible for the buy-off of all panels removed on left wing for 'C' check. I verified all panels were properly installed, including panel 3501 which requires a safety (cotter pin). As a routine, I always tap on #4 and #5 canoe fairings, even after visually checking all bolts installed and safetied. Panel #3501 was installed properly and safetied when it left 'C' check back on jul/mon/02. This incident occurred approximately 2 weeks after my inspection. I know for a fact panel 3501 was installed properly.
Original NASA ASRS Text
Title: A B737-300 WAS FOUND TO HAVE #4 FAIRING HANGING FROM THE WING. FAIRING WAS INSTALLED AND INSPECTED 14 DAYS PRIOR TO SEPARATION.
Narrative: ON JUL/MON/02, WORKED AS AN INSPECTOR ASSIGNED L WING ON ACFT. ON JUL/SUN O2, PANEL 33501 (#4 CANOE FAIRING) SEPARATED FROM ACFT -- FOUND DANGLING UPON LNDG IN ZZZ. I WAS THE INSPECTOR RESPONSIBLE FOR THE BUY-OFF OF ALL PANELS REMOVED ON L WING FOR 'C' CHK. I VERIFIED ALL PANELS WERE PROPERLY INSTALLED, INCLUDING PANEL 3501 WHICH REQUIRES A SAFETY (COTTER PIN). AS A ROUTINE, I ALWAYS TAP ON #4 AND #5 CANOE FAIRINGS, EVEN AFTER VISUALLY CHKING ALL BOLTS INSTALLED AND SAFETIED. PANEL #3501 WAS INSTALLED PROPERLY AND SAFETIED WHEN IT LEFT 'C' CHK BACK ON JUL/MON/02. THIS INCIDENT OCCURRED APPROX 2 WKS AFTER MY INSPECTION. I KNOW FOR A FACT PANEL 3501 WAS INSTALLED PROPERLY.
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.