PVT PLT EXPERIENCES LOSS OF COM FREQ.

Narrative

I WAS CONDUCTING VFR FLT FROM CPS ARPT TO AIZ ARPT VIA THE VIH-FOR. WHEN I RECEIVED A FROM FLAG INDICATION FROM VIH VOR; I DIALED A 260 DEG RADIAL OFF OF VIH. AFTER XING THE VIH VOR; I SWITCHED FUEL TANKS APPROX 10 MI W OF THE VIH VOR. AFTER SWITCHING FUEL TANKS I ATTEMPTED TO TURN OFF MY ELECTRIC FUEL PUMP; PER NORMAL PROC. IN FACT; I HAD ACCIDENTALLY TURNED OFF THE MASTER SWITCH. AFTER 2-3 MINS; I NOTICED SILENCE IN MY HEADSET; USED MY PUSH TO TALK SWITCH TO VERIFY THE CONDITION. THEN I PROCEEDED TO FIND THE PROB. FIRST I CHKED THE PLUGS FROM MY INTERCOM TO THE AIRPLANE; THEN I CONTINUED TO FLY THE AIRPLANE AND CHKED FOR A CTRED CDI NEEDLE ON THE #1 NAV-RADIO; NOT NOTICING THE OFF FLAG BECAUSE I WAS PREOCCUPIED WITH MY RADIO. NEXT I CHKED THE PLUGS FROM MY HEADSET TO MY INTERCOM. THEN I AGAIN CHKED MY CDI; CONTINUED TO FLY THE AIRPLANE. NEXT I CHKED MY CIGAR PLUG BTWN MY INTERCOM AND THE AIRPLANE. BY THIS TIME I HAD DRIFTED S OF COURSE AND OVER WAYNESVILLE; MO. PANIC WAS BEGINNING TO SET IN. THEN SAW AN ARPT AND PROCEEDED TOWARD IT. AS I APCHED; I OBSERVED NO TFC IN AREA (8 MI). WHEN I GOT CLOSER (2 MI); I SAW A CTL TWR AND FOLLOWED NORMAL RADIO INOP PROCS. I CIRCLED 2 MI NW OF THE TWR; AWAITING LIGHT GUN SIGNALS. SEEING NO LIGHT GUN SIGNALS; OR TFC IN THE AREA; I ASSUMED THE TWR WAS CLOSED. I THEN FOLLOWED NORMAL UNCTLED ARPT LNDG OPS. AFTER LNDG; I TAXIED OFF THE RWY AND STOPPED AGAIN WAITING FOR LIGHT GUN SIGNALS; SEEING NO LIGHT GUN SIGNALS; I PROCEEDED TO THE RAMP W OF THE CTL TWR. I NOTICED 2 ARMY OFFICERS APCHING AS I CAME TO A STOP. AS I PROCEEDED TO SHUT DOWN THE AIRPLANE; IT WAS THEN I NOTICED THE MASTER SWITCH IN THE OFF POS. THIS WAS THE APPARENT CAUSE OF MY RADIO FAILURE. THE FUEL PUMP SWITCH IS LOCATED NEXT TO THE MASTER SWITCH; AND I MUST HAVE TURNED OFF THE MASTER SWITCH; THINKING IT WAS THE FUEL PUMP.