MULTI-ENG PVT PLT HAS COM FAILURE AND LANDS WITHOUT PROPER LIGHT SIGNALS.

Narrative

WHILE PREPARING FOR APPROX 12 MI FLT TO HFD FOR AVIONICS REPAIR WORK; EXPERIENCED COMPLETE LOSS OF COMS RADIO SYS -- COULD NOT XMIT OR RECEIVE; ALTHOUGH NAV EQUIP AND XPONDER STILL FUNCTIONAL. OBTAINED HFD TWR TELEPHONE NUMBER FROM FBO AND CONTACTED TWR TO REQUEST NO RADIO APCH (VISUAL) AND LNDG AT HFD. TWR CTLR STATED THAT THEY COULD PICK ME UP ON RADAR AFTER TKOF AND WOULD BE PREPARED FOR MY ARR. I REMINDED HIM I COULD NEITHER RECEIVE NOR XMIT COMS. HE THEN ASKED IF I HAD A CELL PHONE; TO WHICH I REPLIED AFFIRMATIVELY. HE SUGGESTED I CALL IN THE AIR JUST PRIOR TO ARR. AFTER TKOF; AND APPROX 5 MI FROM HFD I CALLED THE TWR; HOWEVER I COULD NOT MAKE CONTACT; MY CELL INDICATED 'NUMBER NOT AVAILABLE' AND WOULD NOT CONNECT. AFTER 4 OR 5 TRIES I PROCEEDED OVERHEAD THE FIELD ABOVE PATTERN ALT AND THEN PASSED THE TWR LOOKING FOR LIGHT SIGNALS. I DID NOT SEE ANY SIGNALS; AND THEN PROCEEDED DOWNWIND; TURNED A R BASE; AND LANDED. I OBSERVED NO OTHER ACFT IN THE TFC PATTERN. AFTER LNDG AND EXITING THE RWY; I DID RECEIVE A LIGHT SIGNAL FROM THE TWR AS I PASSED ON THE TXWY; AND PROCEEDED TO THE RAMP UNDER THE FLASHING GREEN SIGNAL. AFTER SHUTDOWN; I EXITED THE ACFT AND IMMEDIATELY CALLED THE TWR. I EXPLAINED THE PROB WITH THE CELL PHONE AND DESCRIBED MY ACTIONS. THE TWR CTLR APPEARED TO UNDERSTAND THE SITUATION AND AGREED THAT WE SHOULD HAVE HAD A PLAN B IN THE EVENT OF FAILURE TO MAKE CONTACT BY CELL PHONE.