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Medium large transport operating with inoperative engine driven generator. APU being used as power source for electrical fails in-flight.
| Attributes | |
| ACN | 328936 |
| Time | |
| Date | 199602 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : far |
| State Reference | ND |
| Altitude | msl bound lower : 35000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 14800 flight time type : 8000 |
| ASRS Report | 328936 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Flight diverted to far after the APU (which was being used as a power source for electrical system) failed due to low oil pressure warning. Our flight was dispatched from msp direct mot with the right engine driven generator inoperative. The APU powered the right electrical system. APU failed 40-50 mi east of fargo at FL350. An emergency was declared and cabin attendant briefed for landing in 20 mins. Excess fuel burned off to below maximum landing weight. No communication procedures were available to address this contingency. So the generator failure procedure was adapted. Landing was uneventful and fire/rescue crews examined the APU area for damage or fire. None found. The mechanics investigated the APU and found low on oil. Oil svced and APU operation restored. Flight continued on to mot with no problems.
Original NASA ASRS Text
Title: MLG OPERATING WITH INOP ENG DRIVEN GENERATOR. APU BEING USED AS PWR SOURCE FOR ELECTRICAL FAILS INFLT.
Narrative: FLT DIVERTED TO FAR AFTER THE APU (WHICH WAS BEING USED AS A POWER SOURCE FOR ELECTRICAL SYS) FAILED DUE TO LOW OIL PRESSURE WARNING. OUR FLT WAS DISPATCHED FROM MSP DIRECT MOT WITH THE R ENG DRIVEN GENERATOR INOP. THE APU POWERED THE R ELECTRICAL SYS. APU FAILED 40-50 MI E OF FARGO AT FL350. AN EMER WAS DECLARED AND CABIN ATTENDANT BRIEFED FOR LNDG IN 20 MINS. EXCESS FUEL BURNED OFF TO BELOW MAX LNDG WT. NO COM PROCS WERE AVAILABLE TO ADDRESS THIS CONTINGENCY. SO THE GENERATOR FAILURE PROC WAS ADAPTED. LNDG WAS UNEVENTFUL AND FIRE/RESCUE CREWS EXAMINED THE APU AREA FOR DAMAGE OR FIRE. NONE FOUND. THE MECHS INVESTIGATED THE APU AND FOUND LOW ON OIL. OIL SVCED AND APU OP RESTORED. FLT CONTINUED ON TO MOT WITH NO PROBS.
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.