# SDR CA091218002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2009
- Submitted: January 19, 2010
- Operation: General aviation
- Make and model: Aerosp ATR 42-300
- Registry model: [Aerosp ATR 42-300](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-300) (OpenAirDocs)
- Aircraft time: 33,984 hours
- Engine: Pwa PW120
- Propeller: Hamstd 14SF5
- System (JASC): [6110 · Propeller Assembly](https://openairdocs.org/jasc/6110)
- Part: Bearing Cage
- Part number: 782307
- Condition: Broken
- Location: Prop Bearing
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA091218002

## Discrepancy

(CAN) DURING A REMOVAL OF THE PITCH ACTUATOR ON THE NR 1 PROPELLER, MAINTENANCE FOUND THE BALL SEPARATOR WAS BROKEN AND A BALL WAS MISSING. THE BALL WAS LOCATED BUT IT WAS BADLY OUT OF ROUND SO A FURTHER INSPECTION WAS CARRIED OUT AND THE BEARING RACE FOR THE NR 4 BLADE WAS FOUND PITTED AND SCORED OUT OF LIMITS IAW THE CMM.  THE PROPELLER HUB PART NUMBER IS 782701-5, SERIAL NUMBER 1829. (TC NR 20091218002)

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