# SDR UIEA2021110202327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 2, 2021
- Submitted: November 5, 2021
- Operation: Air carrier
- Aircraft: [N475MC](https://openairdocs.org/aircraft/N475MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29252
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2021110202327

## Discrepancy

FUSELAGE SKIN CORROSION AT STA. 1720 AND STRINGER 42 RIGHT(<P ><SPAN>AREA OF CORROSION WAS CUT OUT, NO CORROSION WAS FOUND ON THE STRINGER.  HFEC WAS ACCOMPLISHED AROUND CUT OUT AND EXISTING HOLES WITH NO FINDINGS.  ORIGINAL SKIN WAS 2024-T3 .080".  DOUBLER WAS FABRICATED FROM 2024 T3 .090" AND INSTALLED WITH .080 FILLER.</SPAN></P> / <P> </P>)

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