3519 ATC marker light not working. ~~~~~ 3519 ATC marker light not working.  3519 ATC marker light found faulty. ATC marker light removed but spare not available for replacement. OPS 20 raised to follow-up.  Solihin/Farid/Koon PL 44036 To follow up on replacement.  3519 marker light replaced - Done. Security/function test - OK.  Solihin/Farid 44038