As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF IN POSITION DET SYS 1 OR SYS 2. REPLACED RELAY 20ES FOUND BAD ON PREVIOUS T/S. SWUNG GEAR IN SYSTEM 1 AND 2 REF AMM 32-61-00-5. BOTH SYSTEMS CHECK GOOD. DOWN JACKED ACFT , NEEDS PROX BOX DET BITE TEST WHEN POWER RESTORED. REPLACED AND TESTED GEAR PROX BOX PER AMM 32-31-71-4. TESTS OK. JACKED ACFT AGAIN AND SWUNG GEAR 2 TIMES ON EACH CHANNEL WITH NORMAL INDICATION AND NO FAULTS NOTED. OK TO CLOSE.