What was found
AIRCRAFT WAS GROUNDED: LANDING GEAR FAILED TO RETRACT AFTER TAKEOFF. ACCOMPLISHED QRH PROCEDURE AND LANDING GEAR RETRACTED NORMALLY AFTERWARDS. PERFORMED LANDING GEAR SWING, NO FAULTS NOTED, PER AMM 32-32-00. CHECKED ALL LANDING GEAR SENSORS, PSEU BITE TEST GOOD. PER FIM32-09-00-810-801.