# SDR SWAA2020040821913

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2020
- Submitted: April 8, 2020
- Operation: Air carrier
- Aircraft: [N552WN](https://openairdocs.org/aircraft/N552WN), registered now
- Make and model: Boeing 737-7BX
- Registry model: [Boeing 737-7BX](https://openairdocs.org/model/boeing-737-7bx) (OpenAirDocs)
- Aircraft serial: 30744
- Aircraft time: 59,169 hours, 33,658 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Fitting
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2020040821913

## Discrepancy

***CORROSION*** ON AFT DRAIN MAST FITTING AT B.S. 990; BETWEEN STRINGERS 24 AND 25 LEFT; AROUND GROUND WIRE ATTACH POINT / REMOVED AFT DRAIN MAST FITTING AT BS 990 BETWEEN STRINGERS 24-25 LH AND REPLACED DUE TO NO ALLOWABLE DAMAGE IN SRM. IAW SRM 51-40-02 AND DRAWING 197A7443

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