What was found
FLAPPERS IN BLEED AIR INLET CHECK VALVE CAME LOOSE AND CHAFED THE INSIDE OF THE HOUSING. ONE FLAPPER CHAFED A HOLE THROUGH THE HOUSING.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLAPPERS IN BLEED AIR INLET CHECK VALVE CAME LOOSE AND CHAFED THE INSIDE OF THE HOUSING. ONE FLAPPER CHAFED A HOLE THROUGH THE HOUSING.