# SDR HEEA082799

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2002
- Submitted: January 6, 2003
- Operation: General aviation
- Aircraft: [N973AE](https://openairdocs.org/aircraft/N973AE), registered now
- Make and model: Aerosp AS355*
- Aircraft serial: 3229
- Aircraft time: 1,965 hours
- Engine: Allsn 250C20
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Labyrinth Seal
- Part number: 0292217030
- Part serial: 283B
- Condition: Contaminated
- Location: Engine
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA082799

## Discrepancy

CARBON BUILD UP IN LABYRINTH SEALS CAUSING BINDING NG.

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