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An MD80 main landing gear door assembly may have been repaired using unapproved and unauthorized instructions and documents.
| Attributes | |
| ACN | 400038 |
| Time | |
| Date | 199804 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 400038 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other oversight : supervisor |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure non adherence : far other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Landing gear door was routed to shop for extensive repairs due to inservice damage. Over the course of several months, myself and several other mechanics repaired door using blueprints, repair manuals, and supervisors' instructions. After door left shop, a discussion among several mechanics and myself took place regarding complex, confusing repair scenarios required on door. I realized then that I could have possibly inadvertently misinterpreted blueprints/repair manuals and references for repairs. Callback conversation with reporter revealed the following information: the reporter stated the final resolution on the door repair was that it was repaired correctly. The reporter said one problem was a previous repair that was changed in the structural repair manual long after this repair was accomplished and the question was is the repair ok? The reporter said the blueprints had engineering approval even though the prints were pretty old. The reporter stated the main gear door was inspected after completion of all work and found ok for service.
Original NASA ASRS Text
Title: AN MD80 MAIN LNDG GEAR DOOR ASSEMBLY MAY HAVE BEEN REPAIRED USING UNAPPROVED AND UNAUTHORIZED INSTRUCTIONS AND DOCUMENTS.
Narrative: LNDG GEAR DOOR WAS ROUTED TO SHOP FOR EXTENSIVE REPAIRS DUE TO INSERVICE DAMAGE. OVER THE COURSE OF SEVERAL MONTHS, MYSELF AND SEVERAL OTHER MECHANICS REPAIRED DOOR USING BLUEPRINTS, REPAIR MANUALS, AND SUPERVISORS' INSTRUCTIONS. AFTER DOOR LEFT SHOP, A DISCUSSION AMONG SEVERAL MECHANICS AND MYSELF TOOK PLACE REGARDING COMPLEX, CONFUSING REPAIR SCENARIOS REQUIRED ON DOOR. I REALIZED THEN THAT I COULD HAVE POSSIBLY INADVERTENTLY MISINTERPRETED BLUEPRINTS/REPAIR MANUALS AND REFERENCES FOR REPAIRS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE FINAL RESOLUTION ON THE DOOR REPAIR WAS THAT IT WAS REPAIRED CORRECTLY. THE RPTR SAID ONE PROBLEM WAS A PREVIOUS REPAIR THAT WAS CHANGED IN THE STRUCTURAL REPAIR MANUAL LONG AFTER THIS REPAIR WAS ACCOMPLISHED AND THE QUESTION WAS IS THE REPAIR OK? THE RPTR SAID THE BLUEPRINTS HAD ENGINEERING APPROVAL EVEN THOUGH THE PRINTS WERE PRETTY OLD. THE RPTR STATED THE MAIN GEAR DOOR WAS INSPECTED AFTER COMPLETION OF ALL WORK AND FOUND OK FOR SERVICE.
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.