What was found
SHIP 6704 -ATB- RETURNED TO ATL DUE TO LOSS OF THE NR 1 AND NR 2 AUTO PRESSURE CONTROLLERS. CORRECTIVE ACTION: BOTH CONTROLLERS FAULT AC MOTOR REPLACED OUTFLOW VLV. MTC FOUND UPPER PRESSURE RELIEF VLV TRIPPED, REPLACED SAME.
- Difficulty date
- May 24, 2019
- Submitted
- May 29, 2019
- Operation
- Air carrier
- Aircraft
- N6704Z
- Make and model
- Boeing 757232
- Aircraft serial
- 30396
- Aircraft time
- 64,818 hours, 24,064 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Condition
- Faulty
- Location
- Cabin Pressure
- Stage of operation
- TO
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.