# SDR BIER0056

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2001
- Submitted: May 10, 2001
- Operation: General aviation
- Aircraft: [N43595](https://openairdocs.org/aircraft/N43595), registered now
- Make and model: Piper PA-28-236
- Registry model: [Piper PA-28-236](https://openairdocs.org/model/piper-pa-28-236) (OpenAirDocs)
- Aircraft serial: 288411018
- Aircraft time: 3,433 hours
- Engine: Lyc O540*
- Engine time: 1,435 hours
- System (JASC): [7100 · Powerplant System](https://openairdocs.org/jasc/7100)
- Part: Thrust Plate
- Part number: LW12892
- Condition: Broken
- Location: Rocker Arm Shaft
- Part time: 1,435 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/BIER0056

## Discrepancy

AT 400 HR VALVE INSPECTION FOUND ROCKER ARM SHAFT THRUST BUTTONS BRITTLE AND CRACKED.  SUBMITTER RECOMMENDATION: STRESS THE IMPORTANCE OF THE 400 HR VALVE INSPECTION.

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