What was found
NR 1 ENGINE FAN AIR VALVE CHECK FAILED. ACP ON WU K5294E. 1 ENG FAN AIR VALVE CHECK FAILED. REPLACED VALVE AND PASSED MAT TEST.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 1 ENGINE FAN AIR VALVE CHECK FAILED. ACP ON WU K5294E. 1 ENG FAN AIR VALVE CHECK FAILED. REPLACED VALVE AND PASSED MAT TEST.