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A DC9-30 operated in non compliance for 3 days by several crews with no exhaust gas temperature limits marked on the APU indicator.
| Attributes | |
| ACN | 471311 |
| Time | |
| Date | 200004 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 19290 |
| ASRS Report | 471311 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 13100 flight time type : 800 |
| ASRS Report | 471305 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : briefing contributing factor : schedule pressure performance deficiency : testing performance deficiency : inspection performance deficiency : installation |
| Supplementary | |
| Problem Areas | Aircraft Company Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
We flew a DC9-30 that had no egt limit markings on its APU egt gauge. It was not noticed by flight crew. I have no idea if this would be an airworthiness issue or not. No one seems to know for sure, however maintenance is replacing the gauge with one that has limit markings. We have 2 APU types with different maximum continuous and transitory egt limits. How a 'generic marked' APU egt gauge ended up in the airplane is currently being investigated by the company maintenance department and safety/regulation compliance department.
Original NASA ASRS Text
Title: A DC9-30 OPERATED IN NON COMPLIANCE FOR 3 DAYS BY SEVERAL CREWS WITH NO EXHAUST GAS TEMP LIMITS MARKED ON THE APU INDICATOR.
Narrative: WE FLEW A DC9-30 THAT HAD NO EGT LIMIT MARKINGS ON ITS APU EGT GAUGE. IT WAS NOT NOTICED BY FLC. I HAVE NO IDEA IF THIS WOULD BE AN AIRWORTHINESS ISSUE OR NOT. NO ONE SEEMS TO KNOW FOR SURE, HOWEVER MAINT IS REPLACING THE GAUGE WITH ONE THAT HAS LIMIT MARKINGS. WE HAVE 2 APU TYPES WITH DIFFERENT MAX CONTINUOUS AND TRANSITORY EGT LIMITS. HOW A 'GENERIC MARKED' APU EGT GAUGE ENDED UP IN THE AIRPLANE IS CURRENTLY BEING INVESTIGATED BY THE COMPANY MAINT DEPT AND SAFETY/REG COMPLIANCE DEPT.
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.