What was found
APU START USING BATTERY MODE, SECOND TIME FAILED TO START. REPLACED APU BATTERY IAW AMM 24-31-04, & REPLACED THE APU CRANK CONTACTOR IAW AMM 49-41-05. APU OPS TESTED NORMAL IAW AMM 49-11-00.
- Difficulty date
- July 7, 2017
- Submitted
- July 7, 2017
- Operation
- Air carrier
- Aircraft
- N644GT
- Make and model
- Boeing 7673JHF
- Aircraft serial
- 37810
- Aircraft time
- 10,902 hours, 2,678 cycles
- System (JASC)
- 4940 · APU Start/Ignition System
- Part
- Battery
- Part number
- BA0601
- Part serial
- 113378
- Condition
- Inoperative
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- G
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.