Narrative:

Communication units and audio control switch on wheel just repaired. Microphone (audio) switch on what jammed and communications impossible. Approaching mission bay 20-30 mi from north the communication was inaudible. As I approached mission bay VOR there was good reception. I descended from 7000' which I had maintained while attempting to receive approach directions. I was in VFR and elected not to land at montgomery VFR until I had radio contact. I am not familiar with san diego area and did not want to chance being in way of aircraft landing or taking off at montgomery field. I was on radar and anti-collision and navigation lights on. Approach knew where I was and so did I at all times. I was observing closely. I am here (montgomery) for my annual instrument refresher. I have discussed my action with approach and my instrument instrument. Next time in VFR conditions I will land VFR and not pass my point of clearance (mission bay VOR). Approach control was very helpful.

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Original NASA ASRS Text

Title: STUCK MIC SWITCH CAUSED LOSS OF RADIO COM.

Narrative: COM UNITS AND AUDIO CTL SWITCH ON WHEEL JUST REPAIRED. MIC (AUDIO) SWITCH ON WHAT JAMMED AND COMS IMPOSSIBLE. APCHING MISSION BAY 20-30 MI FROM N THE COM WAS INAUDIBLE. AS I APCHED MISSION BAY VOR THERE WAS GOOD RECEPTION. I DSNDED FROM 7000' WHICH I HAD MAINTAINED WHILE ATTEMPTING TO RECEIVE APCH DIRECTIONS. I WAS IN VFR AND ELECTED NOT TO LAND AT MONTGOMERY VFR UNTIL I HAD RADIO CONTACT. I AM NOT FAMILIAR WITH SAN DIEGO AREA AND DID NOT WANT TO CHANCE BEING IN WAY OF ACFT LNDG OR TAKING OFF AT MONTGOMERY FIELD. I WAS ON RADAR AND ANTI-COLLISION AND NAV LIGHTS ON. APCH KNEW WHERE I WAS AND SO DID I AT ALL TIMES. I WAS OBSERVING CLOSELY. I AM HERE (MONTGOMERY) FOR MY ANNUAL INSTRUMENT REFRESHER. I HAVE DISCUSSED MY ACTION WITH APCH AND MY INSTRUMENT INSTR. NEXT TIME IN VFR CONDITIONS I WILL LAND VFR AND NOT PASS MY POINT OF CLRNC (MISSION BAY VOR). APCH CTL WAS VERY HELPFUL.

Data retrieved from NASA's ASRS site as of August 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.