As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O OF BOSTON GEAR HANDLE WOULD NOT RAISE. AFTER TWO ATTEMPTS GEAR HANDLE WAS RAISED. HOWEVER BOTH MAINS INDICATE UNSAT (RED LIGHTS AT S/O AND PILOTS INDICATORS ILLUMINATED). FOLLOWED QRH DIRECTION, WITH SAME RESULTS. FLEW REMAINING FLIGHT AT < 260 KIAS. T/S AS PER TAFI MANUAL REF 32-30 FAULT CODE -AC-, PERFORMED BITE TEST OF PROXIMITY BOX WITH NO FAULTS NOTED. REMOVED AND REPLACED PROX BOX AS PRECAUTIONS ALL TEST PASS NO FAULTS NOTED REF DC-10 MM REF 32-61-01-2. A/C OK FOR SERVICE. ALL INDICATIONS NORMAL.