# SDR DALA2019122327490

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2019
- Submitted: December 23, 2019
- Operation: Air carrier
- Aircraft: [N822DX](https://openairdocs.org/aircraft/N822DX), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33966
- Aircraft time: 40,733 hours
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Corroded
- Location: Lt Wing
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2019122327490

## Discrepancy

CORROSION ON COUNTERSINKS ON LH UPPER SKIN IN DRAG FITTING HOLES NBR 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14 AND 18 IN REF NRC 305 AND 306.   REPAIRED PER ERA 583990-14AD REV. ORIG. SECTION 1 AND ETI-57-19-190 REV 13.

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