What was found
(CAN) LEFT MLG COULD NOT EXTEND & THE ACFT LANDED WITH LT MAIN RETRACTED. NO INJURIES WERE REPORTED. GEAR DISAGREE EVENT ON APPROACH, CYCLED GEAR & PERFORMED EMER EXTENSION, LT MLG FAILED TO EXTEND. DAMAGE TO LT WINGLET, LT FLAPS, SLIGHT DAMAGE TO LT MLG GEAR DOOR FWD TIP. CAUSE UNDETERMINED AT THIS TIME, INCIDENT STILL UNDER INVESTIGATION BY THE NTSB. ACFT RETURNED TO SERVICE MAY 31ST 2015.