As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, WHEN GEAR WAS RETRACTED THE DOOR NOT LATCH LIGHT REMAINED ON. THE CREW CYCLED THE GEAR THE DOOR NOT LATCH LIGHT STILL REMAINED ON THE ALT GEAR DOOR LIGHT REMAINED OUT. ON DECENT THE LT ALT GEAR DOOR LIGHT MOMENTARILY FLASHED ON THEN OFF. THEY LANDED WITHOUT FURTHER INCIDENT. MX FOUND THAT SWITCHES COVERED IN GLYCOL. THEY CLEANED THE SWITCHES, OPS CHECK GOOD IAW MM 32-60-0. ACFT WAS RETURNED TO SERVICE.