As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GULFSTREAM ISSUED CUSTOMER BULLETIN 92 WHICH ADJUSTED THE THRUST REVERSER UNLOCK SWITCHES. NO DEFECTS WERE NOTED ON S/N 1034. LATER, GAC RE-ISSUED CB 92 AMI WHICH CANCELLED CB 92. NEXT, CB 92A WAS ISSUED WHICH DID NOT FUNCTION ON S/N 1034. IT DESTROYED THE SWITCHES DUE TO IMPROPER ADJUSTMENT INSTRUCTIONS.