# SDR P5CA9801598

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N921FT](https://openairdocs.org/aircraft/N921FT), registered now
- Make and model: Boeing 747283B
- Aircraft serial: 21575
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Pack
- Condition: Malfunctioned
- Location: Nr 2
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA9801598

## Discrepancy

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.

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