CHECK BCP OF 3509 AND 3510 EASE CHECK THE BCP OF 3509, 3510 AS THE EVENT LOGS SHOWN ABNORMALITIES ~~~~~ CHECK BCP OF 3509 AND 3510     Found #1510 BCP stuck at 0.25 barb when at coast position.Checked #1510 ACU solenoid v/v O/L. Replacedv ACU and carried out brakes cyclic function test-ok. #1510 ACU-Old s/n: 1244-106  New s/n: 1107-088 Not: 2120955 raise. Done by Jack/Koh. 15/01/20