# SDR IPXA2026102470613

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2026
- Submitted: October 28, 2026
- Operation: Air carrier
- Aircraft: [N462UP](https://openairdocs.org/aircraft/N462UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 28266
- Aircraft time: 41,618 hours, 21,864 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shear Web
- Part number: 143N8750
- Condition: Corroded
- Location: Zone 200
- 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/IPXA2026102470613

## Discrepancy

EVIDENCE OF CORR0SION IN MULTIPLE AREAS BELOW PANEL 231XCF. AFTER REMOVED SURFACE PROTECTION ON REPORTED MARK IN SHEAR WEB FOUND 06 SPOT OF CORROSION LOCATED BTW STA 440 TO STA 480 AND BTW LBL45.5 TO LBL62.75. PERFORMED CHECK SURFACE SMOOTH, FOUND 63 MICROINCHS RA IN BLEND OUT AREAS. IAW B757 SRM 53-30-15-1A-3 ALLOWABLE DAMAGE 3 STEP 2D. T90482. AND APPLIED SURFACE PROTECTION IAW B757 SRM 51-20-01, AMM 51-21-15-370-801 AND SRM 53-30-15-1A-3 AD3 STEP 2F-G.

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