# SDR CALA2025031902949

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2025
- Submitted: March 19, 2025
- Operation: Air carrier
- Aircraft: [N12238](https://openairdocs.org/aircraft/N12238), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28804
- Aircraft time: 78,270 hours, 28,919 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025031902949

## Discrepancy

(SUPPORT TASK) FLOOR SUPPORT BETWEEN STA 294 TO 312 RBL 10 HAS CORROSION ON UPPER SURFACE.  TRANSCRIBED FROM HAECO GSO NR 9286609 EVALUATED FLOOR SUPPORT BETW STA 294 TO 312 RBL10, ORIGINAL MATERIAL 0.080 REMAINING MATERIAL 0.050 MATERIAL LOSS 0.030. FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-10-51. ALLOWABLE DAMGED SECTION 41 FIG. 105 DETAIL C SHEET 1 TOOL NO. T8493Q DIAL GAUGE, CAL DUE DATE 02/JAN/2026 AND REMOVED AND REPLACED FLOOR SUPPORT IAW B737 DWG NO. 141A5410 AND SRM 51-40-02 AND 51-40-05 SFR DATA ADDED

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