As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU AIR INTAKE LOWER CUT OUT FLANGE IS EXFOLIATED. L REMOVE CORROSION FROM 2 EA ANGLES AT APE AIR INTAKE DUCT. LOWER CUT OUT YAW SUM 51-10-02. BLENDED TWO EACH ANGLES ORIGINAL MAT , LOSS .06 INCHES , REMAINING .000", FOUND 2EA. ANGLES OUT OF LIMITS AS PER SUM 53-00-03, NO ALLOWABLE DAMAGE. R & R 2 EA ANGLES IAW SUM 51-40-02 & DOG 148N3105. MAJOR REPAIR.