# SDR UIEA200400114

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2004
- Submitted: July 2, 2004
- Operation: Air carrier
- Aircraft: [N517MC](https://openairdocs.org/aircraft/N517MC), registered now
- Make and model: Boeing 747243B
- Aircraft serial: 23300
- Engine: Ge CF650E2
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 71923811
- Condition: Unserviceable
- Location: Nr 3
- Stage of operation: TO
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA200400114

## Discrepancy

AFTER TAKEOFF, NR 3 AIR CONDITIONING PACK STARTED MAKING LOW RUMBLING SOUND.  SMELLED BURNING ODOR, TURNED NR 3 PACK OFF FOR REMAINDER OF FLIGHT.  REMOVED AND REPLACED NR 3 AIR CYCLE MACHINE. GROUND OPERATION CHECK NORMAL IAW MM.

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