# SDR DALA2023062605106

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 2023
- Submitted: June 26, 2023
- Operation: Air carrier
- Aircraft: N939DG
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 38684
- Aircraft time: 21,728 hours, 15,561 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- 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/DALA2023062605106

## Discrepancy

(LOG 2826389) DURING INSTALLATIONS, CORROSION WAS FOUND ON THE EXTERNAL SURFACE OF THE FUSELAGE CROWN UPPER SKIN (PN 146A3101-38), UNDER #2 ADF ANTENNA BETWEEN APPROX. BS 727+18 AND BS 727A+16, STR S-1 AND S-2R, AROUND NUTPLATE FASTENER HOLES. MAINTENANCE REPAIRED CORROSION PER ERA 609578-14.

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