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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier mechanic reports of a faulty chip detector being found in a jet engine that had been shut down in flight prior to inspection. Feels it was either a faulty detector because of wear or sabotage. In either event, it was not installed with any quality control being exercised.
| Attributes | |
| ACN | 151278 |
| Time | |
| Date | 199007 |
| Day | Mon |
| Place | |
| Locale Reference | airport : sfo |
| State Reference | CA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : mmu |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport |
| Flight Phase | ground : preflight |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other other personnel other |
| Qualification | other other : other |
| ASRS Report | 151278 |
| Events | |
| Anomaly | aircraft equipment problem : critical 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:
A full flow chip detector was found out of the engine causing an in-flight shutdown. Detector was inspected and reinstalled the previous night. I found it to be virtually impossible to install the detector incorrectly and replaced its 'circlip'. The detector kept falling out, therefore, I feel it to be either a faulty, or worn detector. Possibly a chance of sabotage which I feel strongly about.
Original NASA ASRS Text
Title: ACR MECHANIC REPORTS OF A FAULTY CHIP DETECTOR BEING FOUND IN A JET ENGINE THAT HAD BEEN SHUT DOWN IN FLT PRIOR TO INSPECTION. FEELS IT WAS EITHER A FAULTY DETECTOR BECAUSE OF WEAR OR SABOTAGE. IN EITHER EVENT, IT WAS NOT INSTALLED WITH ANY QUALITY CONTROL BEING EXERCISED.
Narrative: A FULL FLOW CHIP DETECTOR WAS FOUND OUT OF THE ENG CAUSING AN INFLT SHUTDOWN. DETECTOR WAS INSPECTED AND REINSTALLED THE PREVIOUS NIGHT. I FOUND IT TO BE VIRTUALLY IMPOSSIBLE TO INSTALL THE DETECTOR INCORRECTLY AND REPLACED ITS 'CIRCLIP'. THE DETECTOR KEPT FALLING OUT, THEREFORE, I FEEL IT TO BE EITHER A FAULTY, OR WORN DETECTOR. POSSIBLY A CHANCE OF SABOTAGE WHICH I FEEL STRONGLY ABOUT.
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.