# SDR 96ZZZX708

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N54BA](https://openairdocs.org/aircraft/N54BA), registered now
- Make and model: Robsin R22BETA
- Aircraft serial: 1888
- Engine: Lyc O320B2C
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Camshaft
- Part number: LW11754
- Condition: Worn
- Location: Nr 3 Intake
- Part time: 1,145 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/96ZZZX708

## Discrepancy

DURING REMOVAL OF NR 1 AND NR 3 CYLINDERS FOR MAINTENANCE, INTERNAL INSPECTION OF THE CAMSHAFT AND TAPPET BODIES REVEALED EXCESSIVELY WORN CAMSHAFT LOBE AT THE NR 3 INTAKE POSITION.  THE TAPPET BODY WHICH CONTACTS AND RIDES ON THE CAMSHAFT LOBE WAS HEAVILY SPALLED ON THE FACE OF THE TAPPET BODY AS WELL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.