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A B737-300 with a reported bird strike was inspected per the maintenance manual. Found evidence of ingestion in left engine. Inspection signoff was not accomplished per the maintenance procedures manual.
| Attributes | |
| ACN | 714813 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 714813 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : manuals performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Chart Or Publication Environmental Factor Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
An improper paperwork error occurred on an inbound ron (routine overnight check) aircraft which reported a bird strike on approach. Inspection was performed per maintenance manual and the only evidence of bird strike was found in the #1 engine. The problem is; I signed off the discrepancy as a time limit deferred with reference to maintenance manual for borescope inspection due within 10 cycles as a maintenance note. I failed to sign off the aircraft log page in accordance with the maintenance procedures manual. I should have been more knowledgeable with the maintenance procedures manual and signed off the original log discrepancy stating that the inspection was performed per maintenance manual with no damage found. Then I should have made a new write-up against the #1 engine with a time deferred item signoff for further inspection.
Original NASA ASRS Text
Title: A B737-300 WITH A RPTED BIRD STRIKE WAS INSPECTED PER THE MAINT MANUAL. FOUND EVIDENCE OF INGESTION IN L ENG. INSPECTION SIGNOFF WAS NOT ACCOMPLISHED PER THE MAINT PROCS MANUAL.
Narrative: AN IMPROPER PAPERWORK ERROR OCCURRED ON AN INBOUND RON (ROUTINE OVERNIGHT CHK) ACFT WHICH RPTED A BIRD STRIKE ON APCH. INSPECTION WAS PERFORMED PER MAINT MANUAL AND THE ONLY EVIDENCE OF BIRD STRIKE WAS FOUND IN THE #1 ENG. THE PROB IS; I SIGNED OFF THE DISCREPANCY AS A TIME LIMIT DEFERRED WITH REF TO MAINT MANUAL FOR BORESCOPE INSPECTION DUE WITHIN 10 CYCLES AS A MAINT NOTE. I FAILED TO SIGN OFF THE ACFT LOG PAGE IN ACCORDANCE WITH THE MAINT PROCS MANUAL. I SHOULD HAVE BEEN MORE KNOWLEDGEABLE WITH THE MAINT PROCS MANUAL AND SIGNED OFF THE ORIGINAL LOG DISCREPANCY STATING THAT THE INSPECTION WAS PERFORMED PER MAINT MANUAL WITH NO DAMAGE FOUND. THEN I SHOULD HAVE MADE A NEW WRITE-UP AGAINST THE #1 ENG WITH A TIME DEFERRED ITEM SIGNOFF FOR FURTHER INSPECTION.
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.