What was found
RECEIVED CABIN ALTITUDE WARNING AT FL390. FOLLOWED QRH ABLE TO MAINTAIN CABIN ALTITUDE IN MANUAL MODE ONLY. AFTER TROUBLESHOOTING FOUND NR 1 AC MOTOR FAULTY. REMOVED AND REPLACED AC MOTOR OPS CHECK GOOD IAW AMM 21-31-05.
- Difficulty date
- August 28, 2018
- Submitted
- August 28, 2018
- Operation
- Air carrier
- Aircraft
- N1489A
- Make and model
- Boeing 76731K
- Aircraft serial
- 27206
- Aircraft time
- 103,015 hours, 19,813 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Motor
- Part number
- 20224785
- Part serial
- 333685
- Condition
- Faulty
- Location
- Nr 1
- Stage of operation
- CR
- 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.