# SDR CALA2026072317947

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2026
- Submitted: July 23, 2026
- Operation: Air carrier
- Aircraft: [N27515](https://openairdocs.org/aircraft/N27515), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43452
- Aircraft time: 17,688 hours, 5,840 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: 147A56603
- 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/CALA2026072317947

## Discrepancy

MAIN CABIN, BS 947, LBL 24, LAV SUPPORT CORRODED.  THE LAV SUPPORT WAS REMOVED AND REPLACED.  REMOVED CORROSION AND EVALUATED AREA WITH ORIGINAL 0.200" REF DWG 147A5650; MATERIAL LOSS .030" AND REMAINING .170" FOUND TO BE OUT OF LIMITS IIAW SRM 53-70-51-1A-1 REMOVED LAV SUPPORT AT LBL24 BETWEEN BS 947 - 967. LOCATED DRILLED AND REPLACED IAW SRM 51-40-02-0G-0, SRM 51-40-05-0G-0 & DWG 147A5650, REV.A.

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