# SDR IPXA2026042837737

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2026
- Submitted: April 30, 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 Fitting
- Part number: 149N75593
- 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/IPXA2026042837737

## Discrepancy

RIGHT WING TO BODY TEE FITTING AT BS 1045, RBL 46 TO RBL 67 HAS EXFOLIATION CORROSION ON UPPER SURFACE.  INSTALLED NEW TEE FITTING IN RT WING AT BS 1045, RBL 46 TO RBL 67 IAW SRM 51-40-02-0G-0.

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