# SDR SWAA2021081615914

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2020
- Submitted: August 16, 2021
- Operation: Air carrier
- Aircraft: [N499WN](https://openairdocs.org/aircraft/N499WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32481
- Aircraft time: 54,217 hours, 32,098 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Fitting
- Condition: Corroded
- Location: Bs 996 S24-25l
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021081615914

## Discrepancy

***CORROSION*** INSIDE DRAIN MAST FITTING AT B.S. 996; BETWEEN STRINGERS 24 LEFT AND 25 LEFT. LBL 25 / REMOVED AND INSTALLED NEW DRAIN MAST FITTING AT B.S. 996 BETWEEN STR 24 & 25 L/H IAW SRM 51-40-02 & BOE DWG# 147A7443 OPPS CHECK GOOD IAW 30-71-00-720-801 56334U 29SEP20

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