# SDR COEA2019082082804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 18, 2019
- Submitted: August 22, 2019
- Operation: Air carrier
- Aircraft: N804HC
- Make and model: Aerosp ATR42-500
- Registry model: [Aerosp ATR42-500](https://openairdocs.org/model/aerospatiale-alenia-atr42-500) (OpenAirDocs)
- Aircraft serial: 623
- Aircraft time: 23,308 hours, 31,075 cycles
- System (JASC): [2100 · Air Conditioning System](https://openairdocs.org/jasc/2100)
- Part: Seal
- Part number: 3037223
- Condition: Failed
- Location: Agb
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/COEA2019082082804

## Discrepancy

FLIGHT 648 ENROUTE,  AIR TURNBACK,   AFTER TAKEOFF, THE NR 1 PACK FAULTED FOLLOWED BY A BURNING ODOR ON THE FLIGHT DECK AND SMOKE IN THE CABIN. CREW ELECTED TO RETURN TO HNL. EMERGENCY DECLARED. LANDED WITHOUT FURTHER INCIDENT.   MAINTENANCE DISCOVERED OIL ON NR 1 PACK COMPONENTS. REPLACED THE AGB CENTRIFUGAL CARBON SEAL. ENGINE RUNS PERFORMED. OPS AND LEAK CHECKS GOOD.

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