As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HPN - FLT 4382 - WHEN LANDING GEAR WAS SELECTED UP AFTER TAKEOFF, THE LEFT MAIN GEAR DOWN AND LOCKED INDICATION REMAINED ILLUMINATED. IT WAS CONFIRMED THAT GEAR WAS RETRACTED. AIRCRAFT RETURNED TO HPN AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT DOWN AND LOCKED SWITCH. SYSTEM TESTED GOOD. (M)