# SDR ASAA2026072268258

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2026
- Submitted: August 27, 2026
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 70,076 hours, 21,176 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Sill Drain
- Part number: 147A85408
- 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/ASAA2026072268258

## Discrepancy

AFT WET R/2 MOPSILL CORRODED IN MULTIPLE AREAS. GROUNDED - YES. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS IAW SRM 53-70-15-1A-1. REMOVED AND REPLACED MOPSILL IAW SRM 51-40-02-0G-0. W= 1.200 O= .080 R= .063 L= 4.750 D= .017.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.