# SDR 96ZZZX4171

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N299QS
- Make and model: Cessna S550
- Registry model: [Cessna S550](https://openairdocs.org/model/cessna-s550) (OpenAirDocs)
- Aircraft serial: S5500099
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Pump
- Part number: 17000382
- Condition: Motor Seized
- Location: Toilet Flush
- Part time: 7,773 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX4171

## Discrepancy

CREW REPORTED TOILET WOULD NOT FLUSH.  FOUND MOTOR/PUMP ASSEMBLY LOCKED UP TIGHT.  THIS IS A COMMON OCCURRENCE AS THE PUMP IMPELLER SWELLS AND JAMS IN THE PUMP HOUSING.  NEED TO USE A MOTOR/PUMP ASSEMBLY THAT IS RESISTANT TO 'BLUE WATER'.

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