What was found
APU INOPERATIVE. REMOVED AND REPLACED THE SURGE VALVE IAW AMM 49-53-01, OPS CHECKED OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU INOPERATIVE. REMOVED AND REPLACED THE SURGE VALVE IAW AMM 49-53-01, OPS CHECKED OK.