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B737 captain reports transfer bus 2 failure at FL360; circuit breaker reset unsuccessful and captain assumes flying duties.
| Attributes | |
| ACN | 784148 |
| Time | |
| Date | 200804 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 36000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 230 flight time total : 17300 flight time type : 10700 |
| ASRS Report | 784148 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
In cruise; a circuit breaker on the P6-12 panel labeled 'xfer bus 2 normal' tripped. Contacted maintenance. A reset was approved. Right IRU was realigned in attitude mode. Approximately 15 mins later; circuit breaker tripped again. First officer had no flight instruments. I assumed PF duties and landed at destination.
Original NASA ASRS Text
Title: B737 CAPT REPORTS TRANSFER BUS 2 FAILURE AT FL360; CIRCUIT BREAKER RESET UNSUCCESSFUL AND CAPT ASSUMES FLYING DUTIES.
Narrative: IN CRUISE; A CIRCUIT BREAKER ON THE P6-12 PANEL LABELED 'XFER BUS 2 NORMAL' TRIPPED. CONTACTED MAINT. A RESET WAS APPROVED. R IRU WAS REALIGNED IN ATTITUDE MODE. APPROX 15 MINS LATER; CIRCUIT BREAKER TRIPPED AGAIN. FO HAD NO FLT INSTS. I ASSUMED PF DUTIES AND LANDED AT DEST.
Data retrieved from NASA's ASRS site as of May 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.