# SDR ASAA2024102053665

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 2024
- Submitted: November 7, 2024
- Operation: Air carrier
- Aircraft: [N442AS](https://openairdocs.org/aircraft/N442AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 43293
- Aircraft time: 39,526 hours, 12,369 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sill Drain
- Part number: 147A854030
- Condition: Corroded
- Location: Zone 200
- 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/ASAA2024102053665

## Discrepancy

MAIN CABIN R2 MOP SILL STA 946-986 CORR. GROUNDED - YES. REMOVED CORROSION, ORIG .080, REMAIN .039 LOSS OF .041, FOUND OUT OF LIMITS IAW B737-900ER SRM 53-70-15. ACCOMPLISHED HFEC INSPECTIONS IAW B737 NDTM PT 6 51-00-00. ACCOMPLISHED DVI IAW B737-900ER SRM 51-10-04, NO DEFECTS NOTED. REMOVED MOP SILL, LOCATED, DRILLED AND INSTALLED NEW MOP SILL IAW BAC DWG 147A8501 AND B737-900ER SRM 51-40-02.

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