# SDR IPXA2026041423711

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2026
- Submitted: April 15, 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: 149N7517138
- 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/IPXA2026041423711

## Discrepancy

LH WING TO BODY TEE - FITTING AT BS 1040 FWD EDGE HAS CORROSION.  REMOVED  TEE ANGLE ON BS 1037.67 LT WTB SIDE. IAW  SRM 51-40-02.   INSTALLED TEE ANGEL AT STA 1040 AT THE L/H WING TO BODY. IAW SRM 51-40-02-0G.

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