# SDR ABXA20260409154

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2026
- Submitted: April 9, 2026
- Operation: Air carrier
- Aircraft: [N763CK](https://openairdocs.org/aircraft/N763CK), registered now
- Make and model: Boeing 767-3P6
- Registry model: [Boeing 767-3P6](https://openairdocs.org/model/boeing-767-3p6) (OpenAirDocs)
- Aircraft serial: 26233
- Aircraft time: 93,349 hours, 30,107 cycles
- System (JASC): [2600 · Fire Protection System](https://openairdocs.org/jasc/2600)
- Part: Module
- Part number: 285T03855
- Part serial: D00794
- Condition: No Test
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA20260409154

## Discrepancy

DURING MTC PREFLIGHT, AFOTLS TEST IS INDICATING BUT NO AURAL WARNINGS. REPLACED MODULE ASSY, AURAL WARNING (M1000) IAW AMM 31-51-04 OPS CHECK GOOD. AIRCRAFT REMAINS NO ETOPS. A/C RETURNED TO SERVICE.

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