# SDR IPXA2026071191237

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 27, 2026
- Submitted: July 14, 2026
- Operation: Air carrier
- Aircraft: [N453UP](https://openairdocs.org/aircraft/N453UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25474
- Aircraft time: 40,247 hours, 23,271 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Retainer
- Part number: 146N50642
- Part serial: NSN
- Condition: Corroded
- 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/IPXA2026071191237

## Discrepancy

DURING REMOVAL ACCESS FOR BEAM REPAIR AT BS 1681 FOUND A RETAINER CORRODED FROM BS 1600 - 1681, RBL 65.  RETAINER FOUND TO BE CORRODED, DELAMINATED AND CRACKED,  REMOVED RETAINER IAW SRM 51-40+02.  INSTALLED NEW RETAINER BETWEEN BS 1600 - 1681, RBL 65.

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