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C172 pilot hears unusual noise and unable to transmit and receive. Belatedly realizes the yoke microphone button is stuck.
| Attributes | |
| ACN | 385100 |
| Time | |
| Date | 199711 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ric |
| State Reference | VA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ric |
| Operator | general aviation : instructional |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 20 flight time total : 1911 flight time type : 841 |
| ASRS Report | 385100 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
I heard a strange noise in my headset. I couldn't eliminate the noise. I couldn't receive any audio on communication and navigation radios. After 2-4 mins I realized the microphone button on the yoke was stuck open. I turned it off, strange noise went away and ric approach chastised me for the stuck microphone. I also realized that all I said to myself while trying to determine the problem was broadcast to everyone else on the frequency (134.7 MHZ). I've told the aircraft operator of the problem. For myself, I'll know how to recognize the problem immediately if it ever happens again.
Original NASA ASRS Text
Title: C172 PLT HEARS UNUSUAL NOISE AND UNABLE TO XMIT AND RECEIVE. BELATEDLY REALIZES THE YOKE MIKE BUTTON IS STUCK.
Narrative: I HEARD A STRANGE NOISE IN MY HEADSET. I COULDN'T ELIMINATE THE NOISE. I COULDN'T RECEIVE ANY AUDIO ON COM AND NAV RADIOS. AFTER 2-4 MINS I REALIZED THE MIKE BUTTON ON THE YOKE WAS STUCK OPEN. I TURNED IT OFF, STRANGE NOISE WENT AWAY AND RIC APCH CHASTISED ME FOR THE STUCK MIKE. I ALSO REALIZED THAT ALL I SAID TO MYSELF WHILE TRYING TO DETERMINE THE PROB WAS BROADCAST TO EVERYONE ELSE ON THE FREQ (134.7 MHZ). I'VE TOLD THE ACFT OPERATOR OF THE PROB. FOR MYSELF, I'LL KNOW HOW TO RECOGNIZE THE PROB IMMEDIATELY IF IT EVER HAPPENS AGAIN.
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.