What was found
NOSE LANDING GEAR FAILED TO EXTEND RESULTING IN DAMAGE TO NOSE L/G DOORS, LOWER ENGINE COWL ASSY, AND PROPELLER. AFTER REPAIR, L/G OPERATES NORMALLY. BELIEVED THAT DOORS 'HUNG' ON LOWER COWL SKIN OR BUMPERS, PN 2452006-15, AND PN 2452006-16. RECOMMEND INDUCING FORCE EQUAL TO MAXIMUM LANDING GEAR EXTENSION DURING OPERATIONAL INSPECTION OF L/G.