What was found
ANC - AFTER TAKEOFF WITH LANDING GEAR UP, NOSE GEAR LIGHT WENT RED WITH GEAR OFF, NOSE GEAR EXTENDED BY ITSELF. REMOVED AND REPLACED NOSE LANDING GEAR TRANSFER CYLINDER (P/N 69141067, S/N DA687) AND LANDING GEAR MODULE. PERFORMED NOSE LANDING EXTENSION AND RETRACTION AND OPS CHECK NORMAL. SUBSEQUENTLY VENDOR CLEANED AND REASSEMBLED NLG MODULE AND ANOTHER VENDOR OVERHAULED TRANSFER CYLINDER. (M)