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A B737-300 during maintenance for a #1 engine compressor stall a deferred item for a required borescope was not accomplished.
| Attributes | |
| ACN | 563171 |
| Time | |
| Date | 200209 |
| Day | Fri |
| 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 | other personnel other |
| ASRS Report | 563171 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Landed in ZZZ1 and during reverse, the #1 engine made a popping noise that sounded like a compressor stall. ZZZ1 maintenance performed inspection and corrective action per maintenance manual 71-00-43-1. Due to the history, I contacted engineering for help. I asked if we needed to perform a borescope per the maintenance manual. He stated the borescope was previously complied with so perform the troubleshooting. ZZZ2 maintenance found the cbp venturi clogged, cleaned same and performed engine run with no defects. Aircraft returned to service. The borescope was not performed after the event, that is the problem. It should have been complied with. The confusion was between myself and the engineer. The borescope was complied with the next day and the #1 engine MEL was replaced.
Original NASA ASRS Text
Title: A B737-300 DURING MAINT FOR A #1 ENG COMPRESSOR STALL A DEFERRED ITEM FOR A REQUIRED BORESCOPE WAS NOT ACCOMPLISHED.
Narrative: LANDED IN ZZZ1 AND DURING REVERSE, THE #1 ENG MADE A POPPING NOISE THAT SOUNDED LIKE A COMPRESSOR STALL. ZZZ1 MAINT PERFORMED INSPECTION AND CORRECTIVE ACTION PER MAINT MANUAL 71-00-43-1. DUE TO THE HISTORY, I CONTACTED ENGINEERING FOR HELP. I ASKED IF WE NEEDED TO PERFORM A BORESCOPE PER THE MAINT MANUAL. HE STATED THE BORESCOPE WAS PREVIOUSLY COMPLIED WITH SO PERFORM THE TROUBLESHOOTING. ZZZ2 MAINT FOUND THE CBP VENTURI CLOGGED, CLEANED SAME AND PERFORMED ENG RUN WITH NO DEFECTS. ACFT RETURNED TO SVC. THE BORESCOPE WAS NOT PERFORMED AFTER THE EVENT, THAT IS THE PROB. IT SHOULD HAVE BEEN COMPLIED WITH. THE CONFUSION WAS BTWN MYSELF AND THE ENGINEER. THE BORESCOPE WAS COMPLIED WITH THE NEXT DAY AND THE #1 ENG MEL WAS REPLACED.
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.