# SDR CALA2026021913901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2026
- Submitted: February 19, 2026
- Operation: Air carrier
- Aircraft: [N33289](https://openairdocs.org/aircraft/N33289), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31607
- Aircraft time: 66,417 hours, 24,571 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 143A8122
- Condition: Corroded
- Location: Zone 100
- Part time: 66,416 hours, 24,571 cycles
- 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/CALA2026021913901

## Discrepancy

FWD CARGO BAY MAIN SILL WEB BTWN BS 440 - 500 POSSIBLE CORROSION.   REPLACED THE MAIN SILL WEB BTWN BS 440 - 500 IAW SRM 51-40-02--0G-0, 51-40-05-0G-0, 51-40-08-0G-0. AMM 51-21-91-620-802, 51-21-72-370 -804, AND DWG 143A8122, REV D, DWG 143A8120, REV T.

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