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An MD88 was dispatched and operated in non compliance with 2 de-rated engines not entered in the FMC database.
| Attributes | |
| ACN | 458771 |
| Time | |
| Date | 199912 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Rain Ice |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 250 flight time total : 10700 flight time type : 7000 |
| ASRS Report | 458771 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : work cards performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Company Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | Flight Operations Manual |
Narrative:
Aircraft was dispatched with intermixed engine confign. Both engines were de-rated to -217C power (instead of -219) by maintenance control. However, maintenance did not reconfigure the FMS database for -217C (it remained at -219). There was a company memo posted regarding this situation, but the crew missed reading it even though we did check the board the day before at home base. (Less than perfect system for disseminating important information.) when we arrived at home base and talked to maintenance, they reported that the FMS should probably have been deferred (and subsequently was) because they had no way of reprogramming the FMS for -217C power (in contrast to what the memo stated!). Maintenance's engineering orders for the de-rated confign made no mention of the FMS database whatsoever! Obviously different departments within the company were working at cross-purposes on this.
Original NASA ASRS Text
Title: AN MD88 WAS DISPATCHED AND OPERATED IN NON COMPLIANCE WITH 2 DE-RATED ENGS NOT ENTERED IN THE FMC DATABASE.
Narrative: ACFT WAS DISPATCHED WITH INTERMIXED ENG CONFIGN. BOTH ENGS WERE DE-RATED TO -217C PWR (INSTEAD OF -219) BY MAINT CTL. HOWEVER, MAINT DID NOT RECONFIGURE THE FMS DATABASE FOR -217C (IT REMAINED AT -219). THERE WAS A COMPANY MEMO POSTED REGARDING THIS SIT, BUT THE CREW MISSED READING IT EVEN THOUGH WE DID CHK THE BOARD THE DAY BEFORE AT HOME BASE. (LESS THAN PERFECT SYS FOR DISSEMINATING IMPORTANT INFO.) WHEN WE ARRIVED AT HOME BASE AND TALKED TO MAINT, THEY RPTED THAT THE FMS SHOULD PROBABLY HAVE BEEN DEFERRED (AND SUBSEQUENTLY WAS) BECAUSE THEY HAD NO WAY OF REPROGRAMMING THE FMS FOR -217C PWR (IN CONTRAST TO WHAT THE MEMO STATED!). MAINT'S ENGINEERING ORDERS FOR THE DE-RATED CONFIGN MADE NO MENTION OF THE FMS DATABASE WHATSOEVER! OBVIOUSLY DIFFERENT DEPTS WITHIN THE COMPANY WERE WORKING AT CROSS-PURPOSES ON THIS.
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.