Counterbound TC on T407 reported that T243 "B" side headlight not working. TC for T243 checked and c onfirmed "B" side headlight not working. ~~~~~ 3620: Counterbound TC on T407 reported that T243 "B" side headlight not working. TC for T243 checked & confirmed "B" side headlight not working.  3620 B/S headlight found faulty - replaced. Security/function check - OK.  Isamuddin/Izzul/Fudail/Azmi 44998