# SDR 97ZZZX4312

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 5, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Advantage Aircraft Services LLC, repair station Q2AR598N](https://openairdocs.org/faa-repair-station/Q2AR598N/advantage-aircraft-services-llc.md) (OpenAirDocs)
- Aircraft: N41879
- Make and model: Piper PA-31-325
- Registry model: [Piper PA-31-325](https://openairdocs.org/model/piper-pa-31-325) (OpenAirDocs)
- Aircraft serial: 317712069
- Propeller: Hartzl HCE3YR2
- System (JASC): [6110 · Propeller Assembly](https://openairdocs.org/jasc/6110)
- Part: Bolt
- Condition: Misinstalled
- Location: Prop Ctweight
- Part time: 2,218 hours
- Stage of operation: IN
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97ZZZX4312

## Discrepancy

DURING ANNUAL INSPECTION, PROPELLER COUNTERWEIGHT ATTACH BOLTS FOUND UNSAFTIED POST OVERHAUL.  HARTZELL MANUAL NR 117D REQUIRES THESE BOLTS TO BE REPLACED AT OVERHAUL AND RE-DRILLED FOR ROLL-PIN SAFETY. THESE BOLTS WERE RE-USED AFTER OVERHAUL SINCE THEY WERE DRILLED IN A LOCATION WHICH COULD NOT BE SAFTIED WITH A ROLL-PIN.

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