What was found
PILOT REPORTED THAT THE LANDING GEAR CIRCUIT BREAKER TRIPPED ON GEAR RETRACTION, GEAR DID NOT RETRACT. MX TROUBLESHOT MLG, REMOVED & INSTALLED SERVICABLE MLG SELECTOR VALVE IAW AMM 52-30-03-201, PERFORMED OPS CHECK IAW AIM MIC 32-01. OPS & LEAK CHECKED GOOD.