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A B727-200 was dispatched in non compliance with an unauthorized repair accomplished to the inboard flap transmission.
| Attributes | |
| ACN | 446839 |
| Time | |
| Date | 199907 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| 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 | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 10 |
| ASRS Report | 446839 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : testing |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Picked up from previous shift. Previous shift turned over they had found a leak at the outboard torque tube drive shaft at the inboard flap transmission. Previous shift had already removed drive shaft and replaced the o-ring. The assembly was reinstalled and failed a static leak check. I proceeded to remove the assembly and found the o-ring cut. I referenced the aircraft ipc and located the manufacturer's part number for the o-ring. Installed new o-ring. Reinstalled drive shaft assembly. Svced transmission. Transmission passed the static leak check and operational leak check. Aircraft was returned to service.
Original NASA ASRS Text
Title: A B727-200 WAS DISPATCHED IN NON COMPLIANCE WITH AN UNAUTH REPAIR ACCOMPLISHED TO THE INBOARD FLAP TRANSMISSION.
Narrative: PICKED UP FROM PREVIOUS SHIFT. PREVIOUS SHIFT TURNED OVER THEY HAD FOUND A LEAK AT THE OUTBOARD TORQUE TUBE DRIVE SHAFT AT THE INBOARD FLAP TRANSMISSION. PREVIOUS SHIFT HAD ALREADY REMOVED DRIVE SHAFT AND REPLACED THE O-RING. THE ASSEMBLY WAS REINSTALLED AND FAILED A STATIC LEAK CHK. I PROCEEDED TO REMOVE THE ASSEMBLY AND FOUND THE O-RING CUT. I REFED THE ACFT IPC AND LOCATED THE MANUFACTURER'S PART NUMBER FOR THE O-RING. INSTALLED NEW O-RING. REINSTALLED DRIVE SHAFT ASSEMBLY. SVCED TRANSMISSION. TRANSMISSION PASSED THE STATIC LEAK CHK AND OPERATIONAL LEAK CHK. ACFT WAS RETURNED TO SVC.
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.