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MD80 flight crew receive ACARS message related to their having a stuck microphone. Flight crew fail to realize that it is their aircraft message was intended for. Later have to use the lost communication procedure when they become NORDO aircraft.
| Attributes | |
| ACN | 365670 |
| Time | |
| Date | 199704 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zoa |
| State Reference | CA |
| Altitude | msl bound lower : 11000 msl bound upper : 24000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other descent other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 365670 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : far non adherence other other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | aircraft : equipment problem dissipated other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We received the following message, 'hi there, ZOA says you have a stuck microphone transmitting on 134.37, thanks.' we contacted center with no problems and they sent us to a new frequency. We thought another aircraft had the stuck microphone. Some time after descent from FL240 to 11000 ft we noticed the no radio traffic and made an unsuccessful radio check on both radios on several frequencys. We changed squawk to 7600 and followed lost communication procedures. Later, the captain was able to re- establish communication with his microphone. We may have missed some ATC instructions during this period. Maintenance replaced several radio interphone parts.
Original NASA ASRS Text
Title: MD80 FLC RECEIVE ACARS MESSAGE RELATED TO THEIR HAVING A STUCK MIKE. FLC FAIL TO REALIZE THAT IT IS THEIR ACFT MESSAGE WAS INTENDED FOR. LATER HAVE TO USE THE LOST COM PROC WHEN THEY BECOME NORDO ACFT.
Narrative: WE RECEIVED THE FOLLOWING MESSAGE, 'HI THERE, ZOA SAYS YOU HAVE A STUCK MIKE XMITTING ON 134.37, THANKS.' WE CONTACTED CTR WITH NO PROBS AND THEY SENT US TO A NEW FREQ. WE THOUGHT ANOTHER ACFT HAD THE STUCK MIKE. SOME TIME AFTER DSCNT FROM FL240 TO 11000 FT WE NOTICED THE NO RADIO TFC AND MADE AN UNSUCCESSFUL RADIO CHK ON BOTH RADIOS ON SEVERAL FREQS. WE CHANGED SQUAWK TO 7600 AND FOLLOWED LOST COM PROCS. LATER, THE CAPT WAS ABLE TO RE- ESTABLISH COM WITH HIS MIKE. WE MAY HAVE MISSED SOME ATC INSTRUCTIONS DURING THIS PERIOD. MAINT REPLACED SEVERAL RADIO INTERPHONE PARTS.
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.