505/506 Having brake fault during shunti ~~~~~ 505/506 Having brake fault during shunti     Found #3505 & #3506 ACU exhaust port leaking during B1-Coast.Replaced both ACU and carried out brake cyclic test ok. #3505-ACU Old s/n: 1236-040  New s/n: 1306-053 Not: 2203879 #3506-ACU Old s/n: 1016-001  New s/n: 1025-007 Not: 2203881 Done by Sanip/Firdaus/Faddzal/Koh. 28/09/20