What was found
AIR TURN BACK. DURING CLIMBOUT, A LEVEL ONE PACK 3 DISAGREE ALERT, THIS ALERT BECAME INTERMITENT. R & R THE A/C PACK FLOW CONTROL VALVE IAW MM 21-51-01-201, AND PACK OUTLET FLOW SENSOR IAW MM 21-53-03-401, OPS CHECKED GOOD.
- Difficulty date
- March 29, 2018
- Submitted
- March 30, 2018
- Operation
- Air carrier
- Aircraft
- N270UP
- Make and model
- Doug MD11F
- Aircraft serial
- 48576
- Aircraft time
- 58,637 hours, 15,310 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Condition
- Malfunctioned
- Location
- A/C Pack
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.