What was found
MAY 1. AIR INLET CHECK VALVE 2150HH FLAPPER MISSING // CORRECTIVE ACTIONS: MAY 1. THIS ITEM IS DEFERRED TO W.O 2249638 IN ACCORDANCE WITH MEL 21-26-05 PROV 2 CAT "C" MAINTENANCE PROCEDURES WERE PERFORMED N805AV-CNMCC-2019-AV0352 // MAY 02. IN ACCORDANCE WITH AMM 21-26-56-000-001-A AIR INLET CHECK VALVE WAS REMOVED. IN ACCORDANCE WITH AMM 21-26-56-400-001-A INSTALLATION OF AIR INLET CHECK VALVE WAS ACCOMPLISHED UNTIL STEP 4.A.(5) // MAY 04. IN ACCORDANCE WITH AMM 21-26-56-400-001-A FILTER ASSY WAS INSTALLED TEST SATISFACTORY.