# SDR CALA2026042915827

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2026
- Submitted: April 29, 2026
- Operation: Air carrier
- Aircraft: [N37290](https://openairdocs.org/aircraft/N37290), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31601
- Aircraft time: 67,150 hours, 25,079 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 147A5762
- 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/CALA2026042915827

## Discrepancy

AFT WET AREA; FLOOR SUPPORT BETWEEN FLOOR BEAM STA. 947.5 AND FLOOR BEAM STA. 967 RBL 50 MULTIPLE POINTS CORROSION. REQUIRE REPLACE.  REMOVED AND REPLACED INTERCOSTAL BS 927- STA 947 RBL 50 IAW SRM 51-40-02-0G-0 STEP 7, SRM 51-40-05 TABLE A, SRM 51-20-01 STEP 5 C, SOPM 20-41-02 AND DWG 147A5760-SH7-8.  ESFR REPORTING ONLY REMOVED AND REPLACED INTERCOASTAL BS 927-947 RBL 50 IAW SR M 51-40-02-0G-0, SRM 51-40-05 TABLE A, SRM 51-20-01, SOPM 20-41- 02 AND DWG 147A5760.

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