# SDR CALA2026061016990

- 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): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Part number: 146A7502
- Condition: Corroded
- Location: Sta 727h To 847
- 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/CALA2026061016990

## Discrepancy

FOUND DAMAGE CORROSION AT THE AFT CARGO LH ZEE CHANNEL STA 727H TO 847.   REMOVED AND REPLACED ZEE CHANNEL LH SIDE AT AFT CARGO COMPARTMENT BTW STA 727 TO STA 847 IAW SRM 53-00-53-2R-5 REPAIR 5, FIG 202 AND SRM 51-40-02-0G-0 STEP 4 AND STEP 7

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