What was found
THE ALTERNATOR CIRCUIT BREAKER POPPED AFTER A PREVIOUS RESET. THE ACU (ALTERNATOR CONTROL UNIT) P/N-AC2101, S/N-Y59830 FAILED. INSTALLED A NEW ACU, AND THE FUNCTION CHECK PASSED.
- Difficulty date
- October 9, 2026
- Submitted
- October 13, 2026
- Operation
- General aviation
- Filed by
- N3XR816N
Embry-Riddle Aeronautical University Inc - Aircraft
- N923ER
- Make and model
- Cessna 172S
- Aircraft serial
- 172S12979
- Aircraft time
- 3,386 hours
- System (JASC)
- 2421 · AC Generator-Alternator
- Part
- Control Unit
- Part number
- AC2101
- Part serial
- Y59830
- Condition
- Burned
- Location
- Alternator
- Part time
- 3,386 hours
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.