What was found
NOSE LANDING GEAR GREEN DOWN AND LOCKED LIGHT DID NOT COME ON WHEN LANDING GEAR EXTENDED. WENT OUT AND TROUBLESHOT THE PROBLEM CHECKLIST FOLLOWED AND LANDING GEAR WERE PNEUMATICALLY BLOWN DOWN AND D RING FOR NLG WAS PULLED NO RED UNSAFE LIGHT EVER ILLUMINATED. NO GEAR HORN WITH FLAPS AT 35 DEGREE, NO GREEN NLG LIGHT WHEN ROTARY TEST SELECTED TO LDG GEAR POSITION. PLACED AIRCRAFT ON JACKS AND PERFORMED RETRACTION TEST, FOUND NLG LIGHT BURNED OUT. REPLACED LIGHT BULBS, PERFORMED LANDING GEAR OPS CHECK IAW MM CHAPTERS 32-20-06 AND 12-10-36, NO DEFECTS NOTED.