# SDR 98ZZZX1491

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Rockwell Collins Inc, repair station KI2R953K](https://openairdocs.org/faa-repair-station/KI2R953K/rockwell-collins-inc.md) (OpenAirDocs)
- Aircraft: N85CR
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK22
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Switch
- Part number: 45AS410AA001
- Condition: Failed
- Location: Filter Bypass
- 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/98ZZZX1491

## Discrepancy

OIL FILTER BYPASS SWITCH FAILED.  REASON FOR REJECTION, NEW SWITCH WAS ALSO INTERNALLY SHORTED.  ACCORDING TO RAYTHEON, VENDOR HAD A MANUFACTURING PROBLEM.  REPLACED TWO SWITCHES AND BOTH HAD THE SAME PROBLEM.

---
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.