# SDR ASAA2022092040032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2022
- Submitted: September 26, 2022
- Operation: Air carrier
- Aircraft: [N592AS](https://openairdocs.org/aircraft/N592AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35190
- Aircraft time: 52,898 hours, 15,675 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Part number: 147A31103
- Condition: Corroded
- 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/ASAA2022092040032

## Discrepancy

CORROSION ON FUSELAGE SKIN AT STA 917, BETWEEN STR-21L AND STR -22L AT THE LAVATORY VENT AREA. GROUNDED - YES. REMOVED CORROSION ON THE FUSELAGE SKIN AT STATION 917, BETWEEN STR-21L TO STR-22L AT AFT LAVATORY VENT LOCATION, ORIGINAL THICKNESS 0.125", REMOVED 0.125", REMAINING THICKNESS 0.000", 100% MATERIAL LOSS, FOUND OUT OF LIMITS IAW B737-800 SRM 53-00-01-1A-1.ACCOMPLISHED A CATEGORY "B" REPAIR AT THE AFT LAVATORY VENT LOCATION IAW B737-800 SRM -53-70-01-2R-3 REPAIR 3.THIS REPAIR HAS INSPECTION REQUIREMENTS OF AN INSPECTION THRESHOLD OF 50,000 FLIGHT CYCLES AFTER AIRCRAFT DELIVERY PER TABLE 202 OF B737-800 SRM 53-70-01-2R-3 REPAIR 3.

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