# SDR ASAA2025061959414

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2025
- Submitted: July 15, 2025
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 64,757 hours, 19,600 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Doubler
- Part number: 146A32396
- Condition: Corroded
- Location: Zone 100
- 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/ASAA2025061959414

## Discrepancy

BELLY DRAIN DOUBLER BS.737.37 BL.0 SHOWS SIGNS OF CORROSION. GROUNDED - YES. REMOVED CORROSION ON BELLY DRAIN DOUBLER AT STA.737.37 BL.0 ORIGINAL MAT .063" IAW BAC DWG #146A3239 REV:C, LOST .008", REMAINING .055" OF MATERIAL FOUND BEYOND LIMITS IAW B737-800 SRM 53-00-01-1A-5, REMOVED AND REPLACED DOUBLER P/N 146A3239Y6 PO#1125778.1 IAW B737-800 SRM 51-40-02 AND BAC DWG #146A3230 REV:B.

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