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A maintenance controller reports that a contract mechanic failed to advise local maintenance control that the root cause of a company aircraft's CF6-80 engine thrust reverser (T/right) half failing to fully stow on landing was due to lower flexshaft damage. Proper MEL deferral of right outboard T/right required damaged flexshaft section removal prior to dispatch.
| Attributes | |
| ACN | 959404 |
| Time | |
| Date | 201107 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Mininum Equipment List (MEL) |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Lead Technician 0 Maintenance Technician 0 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL Deviation - Procedural Published Material / Policy |
Narrative:
[On] right engine (CF6 80-C2); [the] outboard thrust reverser half failed to stow fully on landing. MEL 78-01 was authorized for use and maintenance procedures (mp) chapter 78-01-00 to lock-out [the] reverser was provided to contract aircraft maintenance technicians (amts). Mp was fully accomplished prior to dispatch and the required logbook entries [were] completed.contract amts had failed to advise local maintenance control that the root cause was lower flexshaft damage; requiring flexshaft section removal. Aircraft operated a flight [from] ZZZZ to ZZZ1 normally; where it was taken out of service for trouble shooting and repairs of MEL 78-01 [deferral]. Upper and lower flexshafts and lower ballscrew actuator planned for replacement.
Original NASA ASRS Text
Title: A Maintenance Controller reports that a Contract Mechanic failed to advise local Maintenance Control that the root cause of a company aircraft's CF6-80 engine thrust reverser (T/R) half failing to fully stow on landing was due to lower flexshaft damage. Proper MEL deferral of right outboard T/R required damaged flexshaft section removal prior to dispatch.
Narrative: [On] right engine (CF6 80-C2); [the] outboard thrust reverser half failed to stow fully on landing. MEL 78-01 was authorized for use and Maintenance Procedures (MP) chapter 78-01-00 to lock-out [the] reverser was provided to Contract Aircraft Maintenance Technicians (AMTs). MP was fully accomplished prior to Dispatch and the required logbook entries [were] completed.Contract AMTs had failed to advise local Maintenance Control that the root cause was lower flexshaft damage; requiring flexshaft section removal. Aircraft operated a flight [from] ZZZZ to ZZZ1 normally; where it was taken out of service for trouble shooting and repairs of MEL 78-01 [deferral]. Upper and lower flexshafts and lower ballscrew actuator planned for replacement.
Data retrieved from NASA's ASRS site as of April 2012 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.