Service difficulty report · Ignition Unit · Boeing 7673JHF
FAA SDR system
- Difficulty date
- August 2, 2020
- Submitted
- August 4, 2020
- Operation
- Air carrier
- Aircraft
- N643GT
- Make and model
- Boeing 7673JHF
- Aircraft serial
- 37809
- Aircraft time
- 17,979 hours, 4,897 cycles
- Part
- Ignition Unit
- Part number
- 38880585
- Part serial
- J16310246
- Condition
- Failed
- Location
- Apu
- Stage of operation
- CR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU COLD SOAK START UNSUCCESSFUL AFTER 3 ATTEMPTS AT FL 320, OAT -39C. APCU BITE SHOWS FAULT REASON NO LIGHT OFF, FAULT LRU IGNITION UNIT. REMOVED AND REPLACED APU IGNITER PLUG. . REMOVED AND REPLACED APU IGNITION UNIT IAW AMM 49-41-03-401. CHECKED GOOD.