# SDR ASAA2026011863956

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2026
- Submitted: January 27, 2026
- Operation: Air carrier
- Aircraft: [N413AS](https://openairdocs.org/aircraft/N413AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 35205
- Aircraft time: 47,604 hours, 14,824 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 147A311043
- 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/ASAA2026011863956

## Discrepancy

EXTERIOR FUSELAGE SKIN SHOWED SIGNS OF CORROSION AROUND TOILET VENT ABOVE LAV SERVICING PANEL.  GROUNDED - YES.  ACCOMPLISHED REPAIR 3, SECTION 47 FUSELAGE SKIN REPAIR AT BS 917, BTWN S21-22L. INSTALLED A DOUBLER, TRIPLER, FILLER & RESTORED PROTECTIVE FINISHES WITHOUT DEVIATION IAW SRM 53-70-01-2R-3. THIS IS A CATEGORY "B" REPAIR.

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