1663 ACU air leaking. To check and recti ~~~~~ 1663 ACU air leaking. To check and recti     #1663 ACU heavy air leak from AC s/v.Found AC s/v cork gasket burst.Replaced ACU and carried out door cyclic/function test ok. ACU-New s/n: 1516-102  Old s/n: 1503-068 Not: 2136877 Done by Kumar/Jack/Sateesh/Koh. 02/03/20