# SDR IPXA2026042176560

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2026
- Submitted: April 23, 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): [4910 · APU Cowling/Containment](https://openairdocs.org/jasc/4910)
- Part: Strap
- Part number: 148N31388000
- 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/IPXA2026042176560

## Discrepancy

WHILE EVALUATING CORROSION AT APU INLET SURROUND STRUCTURE FOUND CORROSION AT APU INLET AFT STRAP AT STA 1825 BETWEEN STR 3R-6R. CORROSION FOUND ON MIDDLE STRAP OUTER SURFACE ONLY. REMOVED AND BLENDED SMOOTH THE CORROSION IAW SRM 53-80-15-1A-1 PARA 3. REINSTALLED OUTER STRAP IN APU INLET AFT SIDE IAW SRM 51-40-02-0G-0 AND REMOVED EWIS PROTECTION BELOW AND ADJACENT TO THE REPAIR IN APU INLET INTERNAL AREA BETWEEN STA 1787- STA 1825 IAW AMM 20-60-07-842-001.

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