What was found
AFTER T/O, #1 PACK INOP. L/H COMM FAILURE, EQUIPMENT COOLING FAILURE, STANDBY INSTRUMENT FAILURE. GENERATED AND EXECUTED E/O 4421A043 FOR DETECTION OF DEFECTS IN A/C SYSTEM.
- Difficulty date
- July 26, 2021
- Submitted
- July 30, 2021
- Operation
- Air carrier
- Aircraft
- N489MC
- Make and model
- Boeing 747412F
- Aircraft serial
- 26553
- System (JASC)
- 3150 · Central Warning
- Part
- Warning Message
- Condition
- Multiple Fail
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J, G
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.