What was found
FOUND DURING REMOVAL OF APU EXHAUST SUPPORT, APU TAIL CONE LOWER FRAME RING AT BS 1992.8 IS CORRODED. INSTALLED FRAME RING ASSY AND ALUMINUM SHEET (SPLICE). IAW SRM 51-40-02.
- Difficulty date
- March 16, 2026
- Submitted
- March 30, 2026
- Operation
- Air carrier
- Aircraft
- N437UP
- Make and model
- Boeing 75724APF
- Aircraft serial
- 25468
- Aircraft time
- 32,154 hours, 21,139 cycles
- System (JASC)
- 5311 · Fuselage Main, Frame
- Part
- Frame
- Part number
- 148N16068
- Condition
- Corroded
- Location
- Zone 100
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.