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Technicians replacing an engine cowling anti-ice valve on an air carrier turbojet discovered a conflict between maintenance manual required engine run procedures.
| Attributes | |
| ACN | 502430 |
| Time | |
| Date | 200101 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 502430 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 502431 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : company policies non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | other |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : work cards performance deficiency : testing |
| Supplementary | |
| Problem Areas | Chart Or Publication Company |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | MAINT MANUAL |
Narrative:
Replaced right engine cowl anti-ice valve. Ran engine at gate to perform leak test. No leaks found, logbook signed off per maintenance manual 75-10-03-2. However, maintenance manual reference 36-00-00-2 requires a high power run-up which was not performed due to conflicting maintenance manual procedures (reference 75-10-01-2). Was informed by supervisor that high power run no loner necessary, per supervisor. High power run performed later that day, with no discrepancies noted.
Original NASA ASRS Text
Title: TECHNICIANS REPLACING AN ENG COWLING ANTI-ICE VALVE ON AN ACR TURBOJET DISCOVERED A CONFLICT BTWN MAINT MANUAL REQUIRED ENG RUN PROCS.
Narrative: REPLACED R ENG COWL ANTI-ICE VALVE. RAN ENG AT GATE TO PERFORM LEAK TEST. NO LEAKS FOUND, LOGBOOK SIGNED OFF PER MAINT MANUAL 75-10-03-2. HOWEVER, MAINT MANUAL REF 36-00-00-2 REQUIRES A HIGH PWR RUN-UP WHICH WAS NOT PERFORMED DUE TO CONFLICTING MAINT MANUAL PROCS (REF 75-10-01-2). WAS INFORMED BY SUPVR THAT HIGH PWR RUN NO LONER NECESSARY, PER SUPVR. HIGH PWR RUN PERFORMED LATER THAT DAY, WITH NO DISCREPANCIES NOTED.
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.