CHECK BRAKING OF 549/550 GNALS CHECKED THE PROX SENSORS OF BOTH 549/550 AND ALL MESUREMENTS THIN SPECS THAT PLEASE CHECK THE BRAKING OF EMU 549/550. ~~~~~ CHECK BRAKING OF 549/550     #3549 Found ACU heavy leaking from exhaust port during B1 to coast.Replaced and carried out brakes cyclic and function test-tested ok. #3549-ACU-Old s/n: 1241-044  New s/n: 1037-019 Not: 2120953 raise. Done by Jack/Koh 15/01/20