# SDR IPXA2026041353887

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2026
- Submitted: May 1, 2026
- Operation: Air carrier
- Aircraft: [N421UP](https://openairdocs.org/aircraft/N421UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25281
- Aircraft time: 35,922 hours, 23,455 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Strap
- Part number: 148N31388000
- Condition: Corroded
- Location: Zone 200
- 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/IPXA2026041353887

## Discrepancy

CORRODED EXISTING FILLER REPAIR AT FS 1825 RBL 3R TO 6R EXISTING MIDDLE STRAP REPAIR ON APU AIR INTAKE INLET CUTOUT AFT STRAP. REMOVE THE EXISTING REPAIR OF APU INLET DOOR MIDDLE STRAP P/N: 148N3138-8000 INSTALLED AT STA 1825 BETWEEN S-3R AND S-6R AND ACCOMPLISH THE REPAIR  SRM REV 124, 53-80-15-2R-1, DETAIL I. INSTALLED NEW REPAIR PARTS ON APU AIR INTAKE IAW SRM 53-80--15-2R-1.

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