What was found
PHL - FLT 701 - AFTER TAKEOFF OUT OF BTV, THE LANDING GEAR WOULD NOT RETRACT. CREW TRIED TO RECYCLE GEAR BUT IT WOULD NOT RETRACT. USED LANDING GEAR OVERRIDE TRIGGER AND GEAR RETRACTED. FLIGHT PROCEEDED ON NORMAL FLGHT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE ADJUSTED THE MAIN LANDING GEAR AIR GROUND SENSE SAFETY SWITCH PER MM 32-09-01. PERFORMED RETRACTION AND EXTENSION CHECK OF LANDING GEAR. SYSTEM CHECKS GOOD. (M)