# SDR IPXA2021111976120

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2021
- Submitted: November 22, 2021
- Operation: Air carrier
- Aircraft: [N452UP](https://openairdocs.org/aircraft/N452UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25473
- Aircraft time: 37,930 hours, 21,506 cycles
- System (JASC): [5710 · Wing Main, Frame Structure](https://openairdocs.org/jasc/5710)
- Part: None
- Part number: 112N410253
- Condition: Corroded
- Location: Ws 770lh Te
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2021111976120

## Discrepancy

INSPECTION TYPE:C**SUPPLEMENTAL SDR**LH WING LOWER SKIN AT STA 760 TE HAS A 1.30" LONG BY 4.00" WIDE AREA OF INTERGRANULAR CORROSION WHICH WHEN REMOVED HAD .110" OF MATERIAL LOSS MAX ALLOWED IS .40" PER SRM 57-20-01-1A-1 TABLE 2.REPAIR PER RCD INSTRUCTIONS EO B757-5730-82166-A.

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