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A B737-300 aircraft was ferried to maintenance base for repairs due to fuel leaking at the left and right wing aft spar walking beam fwd fittings.
| Attributes | |
| ACN | 768624 |
| Time | |
| Date | 200709 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| 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 : technician |
| ASRS Report | 768624 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : installation performance deficiency : inspection performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : testing |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
B737-300 was ferried to ZZZ for a fuel leak in the left wing walking beam area. Upon examination; the aft spar walking beam forward fitting was found mis-drilled and leaking around figure eighted (elongated) holes. The same condition was found on the opposite side of the aircraft. Amt's also found a hilock that had been pilot drilled as if someone had begun work on the right wing of the aircraft; then realized they should be on the left wing. Corrosion in the drilled fastner hole showed it to have been in service for some time. As of today work continues on this aircraft in the hangar.
Original NASA ASRS Text
Title: A B737-300 ACFT WAS FERRIED TO MAINT BASE FOR REPAIRS DUE TO FUEL LEAKING AT THE LEFT AND RIGHT WING AFT SPAR WALKING BEAM FWD FITTINGS.
Narrative: B737-300 WAS FERRIED TO ZZZ FOR A FUEL LEAK IN THE L WING WALKING BEAM AREA. UPON EXAM; THE AFT SPAR WALKING BEAM FORWARD FITTING WAS FOUND MIS-DRILLED AND LEAKING AROUND FIGURE EIGHTED (ELONGATED) HOLES. THE SAME CONDITION WAS FOUND ON THE OPPOSITE SIDE OF THE ACFT. AMT'S ALSO FOUND A HILOCK THAT HAD BEEN PLT DRILLED AS IF SOMEONE HAD BEGUN WORK ON THE R WING OF THE ACFT; THEN REALIZED THEY SHOULD BE ON THE L WING. CORROSION IN THE DRILLED FASTNER HOLE SHOWED IT TO HAVE BEEN IN SVC FOR SOME TIME. AS OF TODAY WORK CONTINUES ON THIS ACFT IN THE HANGAR.
Data retrieved from NASA's ASRS site as of January 2009 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.