What was found
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.
- Difficulty date
- April 9, 2026
- Submitted
- April 9, 2026
- Operation
- Air carrier
- Aircraft
- N763CK
- Make and model
- Boeing 7673P6
- Aircraft serial
- 26233
- Aircraft time
- 93,349 hours, 30,107 cycles
- System (JASC)
- 2600 · Fire Protection System
- 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
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.