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A B767-300ER aircraft engine had egt exceedance of 962 degrees for 26 seconds. Conflict between the MM and the fim for required borescope of the hp compressor and turbine section.
| Attributes | |
| ACN | 746091 |
| Time | |
| Date | 200707 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 746091 |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : company policies |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing contributing factor : manuals performance deficiency : fault isolation |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Chart Or Publication |
Narrative:
Aircraft arrived with complaint of egt exceedance of 962 degrees for 26 seconds. This condition would be ok for service using maintenance manual area excursion doesn't require immediate action. However; fim requires a borescope of hp compressor and turbine for area a incursion. Maintenance control recommended using maintenance manual limits.
Original NASA ASRS Text
Title: A B767-300ER ACFT ENGINE HAD EGT EXCEEDANCE OF 962 DEGREES FOR 26 SECONDS. CONFLICT BETWEEN THE MM AND THE FIM FOR REQUIRED BORESCOPE OF THE HP COMPRESSOR AND TURBINE SECTION.
Narrative: ACFT ARRIVED WITH COMPLAINT OF EGT EXCEEDANCE OF 962 DEGS FOR 26 SECONDS. THIS CONDITION WOULD BE OK FOR SVC USING MAINT MANUAL AREA EXCURSION DOESN'T REQUIRE IMMEDIATE ACTION. HOWEVER; FIM REQUIRES A BORESCOPE OF HP COMPRESSOR AND TURBINE FOR AREA A INCURSION. MAINT CTL RECOMMENDED USING MAINT MANUAL LIMITS.
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.