What was found
APU DID NOT START AFTER 3 ATTEMPTS ON GROUND. (PERFORMED APU BITE ON ECU; FAULTED "IGN UNIT", IAW FIM 49-11, R & R IGN EXCITER UNIT IAW AMM 49-41-03; R & R IGNITOR IAW AMM 49-41-02, OPS CKD NORMAL).
- Difficulty date
- October 19, 2013
- Submitted
- October 21, 2013
- Operation
- Air carrier
- Aircraft
- N640GT
- Make and model
- Boeing 7673S1
- Aircraft serial
- 25221
- Aircraft time
- 73,006 hours, 15,364 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Exciter
- Part number
- 99193SOCN3888058
- Part serial
- 111098
- Condition
- Failed
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.