519/520-DT CHECK FOUND AIR LEAK FAILED 3 ~~~~~ To follow up.  519/520 replaced all the door manifolds that were found having air leakage. Function check - OK. Air leak test : Doors Closed : 0.4 bar/5 min                 Doors Opened : 0.6 bar/5 min     Farid/Haiqal 44287 519/520-DT CHECK FOUND AIR LEAK FAILED 3 BAR/5MIN.  519/520 found air leakage from the following door manifolds & isolated them : #2520 - A1/A2/A3/A4/B4, #1519 - A4/A3/A1/B2/B3/B4 #3519 - A1. Air leak check after isolation of the above doors : Doors open  : 0.5 bar/5 min Doors Close : 0.4 bar/5 min OPS 20 raised to to replace the manifolds & air leak check.  Sarma/Anand/Rasul/Wong/Kiran 44286