What was found
APU GEN OFF LIGHT NOT ILLUMINATING WHEN APU IS OPERATIONAL. GROUNDED - YES. STARTED APU. APU GEN OFF LIGHT WORKS NORMAL. CYCLED APU GEN OFF AND ON SEVERAL TIMES WITH NO FAULTS. APU GCU BITE GOOD. REF FIM 24-21 TASK 801.
- Difficulty date
- July 5, 2023
- Submitted
- July 7, 2023
- Operation
- Air carrier
- Aircraft
- N514AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35193
- Aircraft time
- 52,927 hours, 15,626 cycles
- System (JASC)
- 2420 · AC Generation System
- Part
- Unknown
- Part number
- UNKNOWN
- Condition
- Unknown
- Location
- Unknown
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.