What was found
NR 2 PACK UNCONTROLLABLE IN AUTO AND MANUAL MODE. DUE TO INOP NR 3 PACK ON DMI, HAD TO RETURN TO HKG. INTERCHANGE NR 2 AND NR 3 PACK CONTROLLERS BYPASS VALVE AND TEMP SENSOR AND NR 3 PACK OPS NORMAL.
- Difficulty date
- November 22, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N921FT
- Make and model
- Boeing 747283B
- Aircraft serial
- 21575
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Pack
- Condition
- Malfunctioned
- Location
- Nr 2
- Stage of operation
- CR
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.