# SDR IPXA2026041323730

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2026
- Submitted: April 22, 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): [5350 · Aerodynamic Fairings](https://openairdocs.org/jasc/5350)
- Part: Tee Angle
- Part number: 149N7517
- 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/IPXA2026041323730

## Discrepancy

RH WING TO BODY T-CHORD AT BS 1040 HAS CORROSION AROUND NUTPLATE HOLES.  BLENDED AREA AROUND THE NUTPLATES HOLES TO REMOVE THE CORROSION PER SRM 51-10-02-0G-0 AND AFTER PERFORMED EVALUATION T-CHORD AT STA 1040 WAS FOUND TO BE WHITIN ALLOWABLE LIMITS. PER SRM 53-00-71-1A-1.

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