# SDR UIEA2020120302522

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2020
- Submitted: December 3, 2020
- Operation: Air carrier
- Aircraft: [N472MC](https://openairdocs.org/aircraft/N472MC), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 27062
- Aircraft time: 116,388 hours, 19,459 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Lt Wing
- 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/UIEA2020120302522

## Discrepancy

CORROSION ON LT WING FRONT SPAR LOWER CHORD BETWEEN FSSO 1509.45 AND 1525.45.  ACCOMPLISH EI NO T2020A57M-3164 REV 2 AND REV 1.  INSTALLED PART IAW DWG NO 65B07853 SHEET 03 REV A.  JOB COMPLETED AND CONDITION CHECK NORMAL.

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