SMA PLT ON A NIGHT OP EXPERIENCES A LOSS OF PRIMARY ELECTRICAL PWR AND PERFORMS A MODIFICATION OF THE LOST COM PROC WHEN UNABLE TO ESTABLISH RADIO CONTACT.

Narrative

I WAS PLANNING ON TAKING A NIGHT VFR TO SAVANNAH; GA; FROM ORLANDO; FL; ACFT HAD PREVIOUSLY HAD ALTERNATOR REPLACED. DURING PREFLT; AND ENG RUN-UP; I CHKED AMMETER FOR PLUS READING. IT READ OK; I TOOK OFF; AND WAS TOLD TO CONTACT DEP FROM BY TWR; I CONTACTED DEP AND THEY RESPONDED BY SAYING THEY HAD DIFFICULTY IN HEARING XMISSION. I THEN NOTICED INST LIGHTS WERE BLINKING; I THEN CHK AMMETER AND I WAS SHOWING A DISCHARGE. I SHUT OFF ALL NAVAL EQUIP AND LOOKED ON SECTIONAL CHART FOR NEARBY ARPT. AT THIS POINT I WAS 10 MI N OF ORLANDO EXECUTIVE; I REALIZED AT ANY NON-CTLED ARPT; THE RWYS COULD NOT BE ACTIVATED WITHOUT ELECTRICAL PWR. I CHOSE TO HEAD BACK TO ORLANDO EXECUTIVE AT 1000 FT FOR LNDG. WHILE MAINTAINING VIGILANCE; I ENTERED A L BASE FOR RWY 7. THERE WAS AN ACFT ON FINAL ABOUT 5 MI OUT; I WAS LOOKING FOR ANY LIGHT GUN SIGNALS; BEFORE TURNING FINAL. I MADE A NO FLAP LNDG AND CLRED THE RWY. THEN I RECEIVED A FLASHING GREEN LIGHT AND I TAXIED BACK AND TIED DOWN ACFT. GOAA. (GREATER ORLANDO AVIATION AUTHORITY) STOPPED BY AND CHKED ON ME.