What was found
PILOT REPORTED THAT ON FINAL APPROACH, GEAR DID NOT COME DOWN WHEN SELECTED, AND NO INDICATIONS OF MOVEMENT (UNSAFE LIGHTS). DECLARED AN EMERGENCY, MANUALLY EXTENDED GEAR AND PERFORMED A TOWER FLY BY TO CONFIRM GEAR WAS DOWN, AND THEN LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THAT THE GEAR POWER PACK CIRCUIT BREAKER IN THE LEFT ELECTRICAL PANEL WAS TRIPPED AND CONTAMINATED WITH DE-ICE FLUID MAINTENANCE CLEANED AND RESET THE BREAKER, CLEANED AND RE-SEALED THE ACCESS PANEL, AND CONDUCTED SEVERAL SUCCESSFUL GEAR SWINGS.