 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B757-200 was dispatched with a deferred item on the #1 engine vibration indication. Technician did not understand that engine limits were not exceeded.
| Attributes | |
| ACN | 667814 |
| Time | |
| Date | 200508 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 667814 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : #1 eng deferred vibe indication other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : unqualified personnel performance deficiency : training |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Placarded broadband indication system per 77-05A; when aircraft had pilot report on high engine vibration on left engine. Re-read the maintenance manual and operations manual on engine vibration limits; and read the operation-south and description of the engine vibration monitor. Contributing factors: lack of training program.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED WITH A DEFERRED ITEM ON THE #1 ENG VIBRATION INDICATION. TECHNICIAN DID NOT UNDERSTAND THAT ENG LIMITS WERE NOT EXCEEDED.
Narrative: PLACARDED BROADBAND INDICATION SYS PER 77-05A; WHEN ACFT HAD PLT RPT ON HIGH ENG VIBRATION ON L ENG. RE-READ THE MAINT MANUAL AND OPS MANUAL ON ENG VIBRATION LIMITS; AND READ THE OP-S AND DESCRIPTION OF THE ENG VIBRATION MONITOR. CONTRIBUTING FACTORS: LACK OF TRAINING PROGRAM.
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.