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An A320 crew, en route at FL370, experienced a failure of the captain's audio panel, rendering his VHF communications inoperative.
| Attributes | |
| ACN | 558059 |
| Time | |
| Date | 200208 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 37000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 558059 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 558058 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
En route, captain's audio control panel became inoperative in both transmit and receive modes. Maintenance was contacted via ACARS, and they suggested open/reset of acp circuit breakers. This action had no effect. Advised maintenance of condition. Having waited 5 mins or so with no response, I elected to change acp #1 with acp #3 (obs position). Result was captain's acp was fully operational in transmit and receive modes. Contacted maintenance via phone patch with arinc using captain's radio for operations check, advised maintenance of actions taken. It was not until this time that I became aware that maintenance could recommend against the swap of acp's, unless the conditions warranted it. I advised them that since we were transiting the airspace in area of dca-iad-bwi, full communications were required. Flight continued to bwi for an uneventful landing.
Original NASA ASRS Text
Title: AN A320 CREW, ENRTE AT FL370, EXPERIENCED A FAILURE OF THE CAPT'S AUDIO PANEL, RENDERING HIS VHF COMS INOP.
Narrative: ENRTE, CAPT'S AUDIO CTL PANEL BECAME INOP IN BOTH XMIT AND RECEIVE MODES. MAINT WAS CONTACTED VIA ACARS, AND THEY SUGGESTED OPEN/RESET OF ACP CIRCUIT BREAKERS. THIS ACTION HAD NO EFFECT. ADVISED MAINT OF CONDITION. HAVING WAITED 5 MINS OR SO WITH NO RESPONSE, I ELECTED TO CHANGE ACP #1 WITH ACP #3 (OBS POS). RESULT WAS CAPT'S ACP WAS FULLY OPERATIONAL IN XMIT AND RECEIVE MODES. CONTACTED MAINT VIA PHONE PATCH WITH ARINC USING CAPT'S RADIO FOR OPS CHK, ADVISED MAINT OF ACTIONS TAKEN. IT WAS NOT UNTIL THIS TIME THAT I BECAME AWARE THAT MAINT COULD RECOMMEND AGAINST THE SWAP OF ACP'S, UNLESS THE CONDITIONS WARRANTED IT. I ADVISED THEM THAT SINCE WE WERE TRANSITING THE AIRSPACE IN AREA OF DCA-IAD-BWI, FULL COMS WERE REQUIRED. FLT CONTINUED TO BWI FOR AN UNEVENTFUL LNDG.
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.