C152 PLT EXPERIENCES COMPLETE ELECTRICAL FAILURE WITH LOSS OF RADIO; CONTINUES VFR WITHIN ISP CLASS C AIRSPACE; ENTERS FRG CLASS D AIRSPACE AND LANDS AFTER RECEIVING A LIGHT SIGNAL FROM TWR ON FINAL.

Narrative

COMING BACK TO FARMINGDALE; NY; E OF BROOKHAVEN ARPT; I EXPERIENCED A COMPLETE ELECTRICAL SYS FAILURE. THAT KEPT ME WITH NO RADIOS TO COMMUNICATE. BEING IN VMC ALLOWED ME TO PROCEED WITH MY FLT AS PLANNED BY FOLLOWING THE S SHORE LINE OF LONG ISLAND BACK TO FRG AT 3000 FT. I DECIDED TO STAY IN THE INSIDE OF THE OUTER S BORDER OF LONG ISLAND MACARTHUR (ISP) CLASS C AIRSPACE FOR A COUPLE OF REASONS: 1) IN CASE OF ELECTRICAL FIRE OR ENG FAILURE; I WOULD HAVE BEEN ABLE TO LAND AT LONG ISLAND ARPT. 2) IF APCH CTLRS WERE STILL ABLE TO RECEIVE MY XPONDER SIGNAL OF 7600; I WAS HOPING THEY WOULD KEEP A CLOSE WATCH ON ME AND GIVE REPUBLIC ARPT TWR THE HEADS UP OF AN AIRPLANE APCHING THEM WITH NO RADIOS. I GOT TO REPUBLIC ARPT. I OVERFLEW THE CLASS D AIRSPACE AT 2800 FT AND CIRCLED AROUND THE TWR; DETERMINED THE RWY IN USE; AND THEN DSNDED TO 2000 FT HOPING TO GET LIGHT GUN SIGNALS WHILE CIRCLING ABOVE THE TWR/ARPT. THEN I DECIDED TO DSND FURTHER DOWN TO 1600 FT AND BEING THAT I STILL DIDN'T HAVE THE ATTN OF THE TWR CTLRS; I THEN PROCEEDED TO DSND DOWN TO TPA OF 1100 FT AND ENTER THE R DOWNWIND FOR RWY 1. I ONLY RECEIVED THE LIGHT GUN SIGNALS WHEN I WAS ON FINAL LEG FOR RWY 1. I THINK TWR CTLRS OUGHT TO BE MORE AWARE THAT A PERSON WITH NO RADIOS MIGHT APCH THEIR AIRSPACE AT ANY TIME AND THAT THEY NEED TO KEEP AN EYE OUT THE WINDOW AND ABOVE PATTERN ALT.