As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, LANDING GEAR DID NOT RETRACT WHEN SELECT UP ON FIRST RETRACTION ATTEMPT. SELECTOR HANDLE CYCLED GEAR OPERATED NORMALLY ON ALL SUBSEQUENT SELECTIONS. ACCOMPLISHED OPERATION CHECKS COULD NOT DUPLICATE, TROUBLESHOT SYSTEM AND REPLACED SUSPECTED INTERMITTENT MAIN LANDING GEAR DOOR CONTROL VALVE. ACCOMPLISHED NUMEROUS GEAR SWINGS TO INSURE PROPER OPERATION AND AIRCRAFT WAS RETURNED TO SERVICE. (M)