DT533 / 534 abnormal BCP dershoot @ 1501hrs , 1507hrs, 1517hrslogs: served abnormal BCP. 33 BCP slightly higher than 3534. ~~~~~ DT533 / 534 abnormal BCP     Check ER found #3533 and #2533 ACU slow release.Replaced ACU function and cyclic brake test ok.BCP within cateria. #3553-ACU-Old s/n: 1311-059  New s/n: 1044-026 Not: 2256082 #2533-ACU-Old s/n: 1912-157  New s/n: 1012-015 Not: 2256083 Done by Sanip/Jack. 11/03/21