What was found
AFTER TAKEOFF, STRUT OLEO DID NOT FULLY EXTEND WHICH ALLOWED NOSE WHEEL TO TURN TO THE LEFT AND JAM FORWARD GEAR DOORS ON RETRACTION. AFTER NOSE WHEEL ALIGNMENT CONFIRMED CORRECT, AND UNEVENTFUL LANDING WAS MADE. AIR VALVE AT BASE OF NOSE GEAR STRUT FOUND NOT FULLY TIGHT, ALLOWING THE STRUT NITROGEN TO LEAK OUT. STRUT RESERVICED AND CHECKED OK. FORWARD NLG DOOR SHEER PIN REPLACED.