# SDR IPXA2026090530479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2026
- Submitted: September 11, 2026
- Operation: Air carrier
- Aircraft: [N461UP](https://openairdocs.org/aircraft/N461UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 28265
- Aircraft time: 43,577 hours, 22,026 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Part number: 148N840242284N14
- 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/IPXA2026090530479

## Discrepancy

APU COMPARTMENT STA-1885 LIGHT SWITCH/ INTERPHONE SUPPORT BRACKET AND ATTACHED HORZ STIFFINER HAS CORROSION AND FILLET SEALANT MISSING IN AREAS. RL013 INSTALLED LIGHT SWITCHES S428 AND APU INTERPHONE JACK D413 IAW B757 AMM 23-41-00-400-801 AND SWPM 20-83-11 AND PERFORMED TEST OF THE SERVICE LIGHTS AND SERVICE INTERPHONE SYSTEM AT LIGHT SWITCH S428 AND APU JACK D413 IAW B757 AMM 33-31-00-712-007, 23-41-00-715-001 OPS CHECK GOOD.

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