 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A B737-300 engine was borescope inspected and a required fuel nozzle leakage check was not accomplished due to misleading and unclr instructions.
| Attributes | |
| ACN | 594366 |
| Time | |
| Date | 200309 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : mem.tower |
| 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 : lead technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance lead technician : 2 maintenance technician : 11 |
| ASRS Report | 594366 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far |
| Independent Detector | other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : schedule pressure |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Engineering Instructions |
Narrative:
During a routine borescope inspection on a B737-300 right engine, a step to leak check the fuel nozzles. This may or may not be correct, but it was my interpretation of the trailer cards that if the fuel nozzles were not disturbed, and they were not, then the 'not applicable' or 'not required' would be appropriate. According to the engineering order, you would have to remove a nozzle only if you could not see or there may be a discrepancy involved, which there was not.
Original NASA ASRS Text
Title: A B737-300 ENG WAS BORESCOPE INSPECTED AND A REQUIRED FUEL NOZZLE LEAKAGE CHK WAS NOT ACCOMPLISHED DUE TO MISLEADING AND UNCLR INSTRUCTIONS.
Narrative: DURING A ROUTINE BORESCOPE INSPECTION ON A B737-300 R ENG, A STEP TO LEAK CHK THE FUEL NOZZLES. THIS MAY OR MAY NOT BE CORRECT, BUT IT WAS MY INTERP OF THE TRAILER CARDS THAT IF THE FUEL NOZZLES WERE NOT DISTURBED, AND THEY WERE NOT, THEN THE 'NOT APPLICABLE' OR 'NOT REQUIRED' WOULD BE APPROPRIATE. ACCORDING TO THE ENGINEERING ORDER, YOU WOULD HAVE TO REMOVE A NOZZLE ONLY IF YOU COULD NOT SEE OR THERE MAY BE A DISCREPANCY INVOLVED, WHICH THERE WAS NOT.
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.