# SDR CALA2026061016984

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 9, 2026
- Submitted: June 10, 2026
- Operation: Air carrier
- Aircraft: [N37521](https://openairdocs.org/aircraft/N37521), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64497
- Aircraft time: 18,129 hours, 6,039 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A5676Y5
- 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/CALA2026061016984

## Discrepancy

CORROSION ON AFT WET AREA FLOOR SUPPORT AT STA 950 BTW LBL 26 TO LBL 50, REQUIRE EVALUATION.  REMOVED AND REPLACED FLOOR SUPPORT ON AFT WET AREA STA 950 BTW LBL 26 TO LBL 50, APPLIED ALODINE AND PRIMER IAW DWG 147A5676 REV A, DWG 147A5650 REV: A. AND SRM 51-40-02-0G-0 , 51-40-05-0G-0, 53-70-51-1A-1, 53-70-51-0I AND AMM 51-21-72-370 -804 ,51-21-41-370-802.  . I

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