# SDR CALA2026082118780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2026
- Submitted: August 21, 2026
- Operation: Air carrier
- Aircraft: [N78540](https://openairdocs.org/aircraft/N78540), registered now
- Make and model: Boeing 737824
- Aircraft serial: 63646
- Aircraft time: 27,628 hours, 10,398 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Part number: 143A7501
- 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/CALA2026082118780

## Discrepancy

RIGHT FWD CARGO ZEE CHANNEL BTWN BS 500A - 500I WITH POSSIBLE CORROSION.   PERFORMED PERMANENT REPAIR ON FWD CARGO BAY RT ZEE CHANNEL BTWN BS 500A - 500I IAW SRM 53-00-53-2R-5, 51-40-02-0G-0, 51-40-05-0G-0, 51-40-08-0G-0, & AMM 51-21-72-370-804, 20-60-07-913-801.

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