A UNITED STATES CUSTOMS ACFT FLEW INTO CUBAN AIRSPACE.

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FLYING C-550 ON PATROL FLT NEAR CUBAN ADIZ PT APPROX XA38 Z ON 1/THUR/94. ACFT PENETRATED CUBAN ADIZ. MET CONDITIONS AT THE TIME WAS VFR ON TOP A SOLID CLOUD DECK FROM 2K TO 10K FT. NAV ON THIS FLT WAS CONDUCTED BY INTERNAL NAV SYS. WINDS ALOFT WERE 65 KTS FROM THE S. ACFT WENT INTO CUBAN INNER ADIZ; WAS CONTACTED BY OUR RADAR FACILITY OF ITS LOCATION; ACFT WAS THEN IMMEDIATELY FLOWN N OUT OF THE ADIZ. UPON ARR AT HOME BASE; INS ACCURACY WAS CHKED AND FOUND TO BE 62 MI OFF. INS WAS WRITTEN UP FOR MAINT CHK TO DETERMINE IF PROB WITH INS WAS MECHANICAL OR IF THERE WAS A PROB DUE TO ACFT BEING MOVED PRIOR TO FLT - AND INS LOSING ITS ALIGNMENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR FLIES FOR THE US GOV; NON MIL. HIS MISSION IS TO FIND AND FOLLOW DRUG CARRYING ACFT IN CONJUNCTION WITH GND BASED RADAR. THE FLC PREFLT THEIR ACFT AND ALIGN A LITTON 92 RING LASER INS (ONE ONLY) AND MARK THE ACFT SO THAT IT WILL NOT BE MOVED BEFORE FLT. IN THIS INCIDENT; THE ACFT WAS MOVED ABOUT 35 FT BY MAINT AND THE RPTR WAS NOT NOTIFIED. THIS MOVEMENT SEEMS TO HAVE UPSET THE INS ALIGNMENT FOR THE ENTIRE FLT. THE RPTR WAS OUT OF RANGE OF US BASED VORS AND WAS NOT USING CUBAN BASED VORS AS THEY ARE UNRELIABLE BY HIS PERSONAL OBSERVATION. THE RPTR'S GND BASED RADAR NOTED THAT THE ACFT WAS IN CUBAN AIRSPACE AND SUBTLY NOTIFIED THE RPTR WHO IMMEDIATELY TURNED N. A USN ADMIRAL AT CARIBROC INSISTED THAT THE GOV TAKE 'PERSONNEL ACTION' AGAINST THE RPTR. THE RPTR GOT A LETTER OF REPRIMAND PUT INTO HIS JACKET WHICH WILL DROP DEAD IN 3 YRS. THE RPTR WAS NOT USING HIS WX RADAR FOR GND MAPPING.