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An A319 experienced a transformer rectifier #2 failure accompanied by cabin communications difficulties. Dc #2 bus circuit breaker accidentally pulled and reset.
| Attributes | |
| ACN | 682395 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zdv.artcc |
| State Reference | CO |
| Altitude | msl single value : 36000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| 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 : 240 flight time total : 10000 flight time type : 2000 |
| ASRS Report | 682395 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : ecam - tr 2 failed |
| Resolutory Action | flight crew : overcame equipment problem flight crew : regained aircraft control |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
Flying along at cruise; transformer rectifier 2 (TR-2) failed and the corresponding circuit breaker popped. First officer was the PF and the autoplt #2 failed. We selected autoplt #1 and was back to autoplt flight. Cabin went black; and a constant blue light and call chime was going off in the cabin. We lost all communication with the flight attendants. We brought the lead flight attendant up to the cockpit to keep her and the flight attendants in the loop. We worked with dispatch and maintenance to recover what we had lost. We regained cabin lighting and communications; but did not regain TR-2. In the process of attempting to regain TR-2; I inadvertently pulled the dc bus #2 circuit breaker and after resetting it; had lost the EPR mode on engine #2. We selected N1 manual mode on both engines and continued the flight uneventfully.
Original NASA ASRS Text
Title: AN A319 EXPERIENCED A TRANSFORMER RECTIFIER #2 FAILURE ACCOMPANIED BY CABIN COMS DIFFICULTIES. DC #2 BUS CIRCUIT BREAKER ACCIDENTALLY PULLED AND RESET.
Narrative: FLYING ALONG AT CRUISE; TRANSFORMER RECTIFIER 2 (TR-2) FAILED AND THE CORRESPONDING CIRCUIT BREAKER POPPED. FO WAS THE PF AND THE AUTOPLT #2 FAILED. WE SELECTED AUTOPLT #1 AND WAS BACK TO AUTOPLT FLT. CABIN WENT BLACK; AND A CONSTANT BLUE LIGHT AND CALL CHIME WAS GOING OFF IN THE CABIN. WE LOST ALL COM WITH THE FLT ATTENDANTS. WE BROUGHT THE LEAD FLT ATTENDANT UP TO THE COCKPIT TO KEEP HER AND THE FLT ATTENDANTS IN THE LOOP. WE WORKED WITH DISPATCH AND MAINT TO RECOVER WHAT WE HAD LOST. WE REGAINED CABIN LIGHTING AND COMS; BUT DID NOT REGAIN TR-2. IN THE PROCESS OF ATTEMPTING TO REGAIN TR-2; I INADVERTENTLY PULLED THE DC BUS #2 CIRCUIT BREAKER AND AFTER RESETTING IT; HAD LOST THE EPR MODE ON ENG #2. WE SELECTED N1 MANUAL MODE ON BOTH ENGS AND CONTINUED THE FLT UNEVENTFULLY.
Data retrieved from NASA's ASRS site as of January 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.