 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An air carrier DC9 flight crew had a circuit breaker failure which affected left AC bus supply power to the radar and other system. The flight crew declared an emergency and diverted to a nearby airport.
| Attributes | |
| ACN | 400849 |
| Time | |
| Date | 199804 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lfd |
| State Reference | MI |
| Altitude | msl bound lower : 33000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 11500 flight time type : 4400 |
| ASRS Report | 400849 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : detected after the fact other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Circuit breaker popped on left AC bus -- reset once -- popped again -- pulled all 3 phases and tried to reset but couldn't. 'A' phase seemed broken or damaged. Diverted to detroit due to loss of radar and other instrument failures. Uneventful landing made, emergency terminated.
Original NASA ASRS Text
Title: AN ACR DC9 FLC HAD A CIRCUIT BREAKER FAILURE WHICH AFFECTED L AC BUS SUPPLY PWR TO THE RADAR AND OTHER SYS. THE FLC DECLARED AN EMER AND DIVERTED TO A NEARBY ARPT.
Narrative: CIRCUIT BREAKER POPPED ON L AC BUS -- RESET ONCE -- POPPED AGAIN -- PULLED ALL 3 PHASES AND TRIED TO RESET BUT COULDN'T. 'A' PHASE SEEMED BROKEN OR DAMAGED. DIVERTED TO DETROIT DUE TO LOSS OF RADAR AND OTHER INST FAILURES. UNEVENTFUL LNDG MADE, EMER TERMINATED.
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.