GAR DUE TO ATC LOST COM.

Narrative

CAPT AND FO WERE FLYING THEIR 6TH LEG OF THE DAY AND HAD BEEN ON DUTY 12 1/2 HRS AT ARR. APCH CTL TURNED US OVER TO TWR AND TWR CLRED US TO LAND ON RWY 27R. WE WERE FLYING THE ILS AND ALL WAS COMPLETE ON THE CHKLIST. TWR; AFTER CLRING US TO LAND; CLRED A HVY INTO POS TO HOLD FOR TFC DEPARTING THE PARALLEL AND TFC ON FINAL WAS 8 MI OUT -- US. EVERYTHING APPEARED NORMAL AND AS PLANNED; THEN AS WE APCHED CLOSER; WE NEVER HEARD TWR CLR THE HVY FOR TKOF. UPON LOOKING CLOSER AT THE RWY IT APPEARED THE HVY WAS STILL IN POS. THE FO; WHO WAS FLYING; AND I QUESTIONED EACH OTHER AS TO THE HVY IN POS. IT WAS VERY DIFFICULT TO SEE THE HVY IN POS; AS WITH AN MIA ARPT THERE ARE A LOT OF LIGHTS TO OBSCURE. I CALLED TWR TO 'RECONFIRM CLRED TO LAND.' THERE WAS NO RESPONSE. I CALLED A SECOND TIME; STILL NO RESPONSE. BY NOW; WE ARE APCHING 'SHORT' FINAL AT 400 FT AGL AND HVY STILL APPEARED IN POS. WE CALLED FOR 'GAR' AND INITIATED A GAR. AS WE SET MAX PWR AND GAINED POSITIVE RATE; I AGAIN CALLED TWR (3RD TIME) AND TWR ANSWERED WITH 'GAR; HDG 340 DEGS GAR!' WE REPLIED AND REQUESTED AN ALT. TWR THEN GAVE US VECTORS; ALT; ETC; AND RECLRED US TO LAND. IT WAS UNEVENTFUL. ON THE GND WE SPOKE TO TWR AND THEY CONFIRMED THEY HAD LOST COMS FOR A FEW MINS AND ASKED IF WE HAD SEEN THE 'RED LIGHT FROM TWR TO GAR?' WE HAD NOT. IN THIS CASE; TWR WAS LOCATED ACROSS FIELD -- A LONG WAY AWAY AND BURIED IN THE MASS OF LIGHTS OF MIA. THIS BECAME AN UNEVENTFUL GAR. HOWEVER; VISIONS OF AN LAX ACCIDENT CAME TO MIND WITH THIS CREW; AND I AM SURE THE CTLR WAS VERY CONCERNED! SOME POINTS TO REMEMBER THAT SAVED THIS CREW AND FOR OTHER CREWS TO MAYBE KEEP IN MIND: 1) ALWAYS USE THE APCH FOR THE RWY LNDG INCLUDING A BRIEFING OF; AND IN PARTICULAR THE MISSED PROCS. HAD WE NOT REESTABLISHED COMS WE WERE PREPARED TO FLY THE PUBLISHED PROCS. 2) BE ATTENTIVE TO WHAT OTHER ACFT ARE DOING; WHERE THEY ARE. THIS WAS THE REASON WE KNEW THE HVY WAS STILL ON THE HOLD AS SEEING WAS VERY DIFFICULT IN THE NIGHT. 3) BE ALERT TO WHERE TWR IS AND TAKE A LOOK IN THAT DIRECTION; IF WE WOULD HAVE THEM MAYBE WE COULD SEE THE LIGHT SIGNAL AND GONE AROUND BEFORE THE TWR PERSONNEL HAD HEART PROBS.