# SDR IPXA2026050134931

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2026
- Submitted: May 1, 2026
- Operation: Air carrier
- Aircraft: [N454UP](https://openairdocs.org/aircraft/N454UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25475
- Aircraft time: 43,406 hours, 22,422 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Retainer
- Part number: 148N840273
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2026050134931

## Discrepancy

APU COMPARTMENT FWD BULKHEAD STA 1885 HORZ STRIFFENER JUST BELOW LIGHT SWITCH ASSY HAS AREAS OF LITE CORROSION, BENT AND DOOR HOOK DAMAGED WITH SEVERAL SHEARED FASTENERS. REMOVED 01EA DAMAGED HOOK (RETAINER) FROM APU COMPARTMENT FWD BULKHEAD STA 1885.20 IAW B757-200PF SRM 51-40-02-0G-0. INSTALLED 01EA NEW HOOK (RETAINER) P/N 148N8402Y73 BATCH 0004477134 AND 01EACH STIFFENER P/N 148N8402-42 BATCH 0004476929 AT APU COMPARTMENT FWD BULKHEAD STA 1885 JUST BELOW LIGHT SWITCH IN REF B757-200PF SRM 51-40-02-0G-0.

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