What was found
APU RELIABILITY COLD START, AOT -63C FLT 40,000 3 ATTEMPTS UNSUCCESSFUL. PERFORMED BITE TEST ECU IAW AMM 49-61-05, NO DEFECTS OR FAULTS NOTED. APU START FIRST ATTEMPT AND OPS CHECK NORMAL IAW AMM 49-11-00.
- Difficulty date
- December 13, 2018
- Submitted
- December 14, 2018
- Operation
- Air carrier
- Aircraft
- N1489A
- Make and model
- Boeing 76731K
- Aircraft serial
- 27206
- Aircraft time
- 103,733 hours, 20,059 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Unknown
- Condition
- Malfunctioned
- Location
- Apu
- Stage of operation
- CR
- 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.