NE LIGHT OUT. Resolution: REMOVED INOP LOWER TAIL CONE NAV LIGHT BULB P/N:1683, NSN. INSTALLED NEW NAV LIGHT BULB P/N:1683, NSN. PART RECEIVED FROM SPECIALTY BULB CO. REFERENCE CERTIFICATE OF CONFORMANCE WITH WORK ORDER NO. G778A, DATED 10/21/14. ALL WORK DONE IAW GIV MM 33-03-00. OPS CHECK GOOD. Billing Method