# SDR 2016FA0000306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2016
- Submitted: June 24, 2016
- Operation: General aviation
- Aircraft: N210PF
- Make and model: Cessna P210N
- Registry model: [Cessna P210N](https://openairdocs.org/model/cessna-p210n) (OpenAirDocs)
- Aircraft serial: P21000018
- Aircraft time: 4,026 hours
- Engine: Cont TSIO520*
- Propeller: Hartzl HCJ3YF2
- System (JASC): [6120 · Propeller Controlling System](https://openairdocs.org/jasc/6120)
- Part: Return Spring
- Condition: Broken
- Location: Propeller Hub
- Part time: 151 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2016FA0000306

## Discrepancy

WHILE IN CRUISE FLIGHT ABOVE 10,000 FEET, THERE WAS INSUFFICIENT PITCH TO REDUCE RPM TO CRUISE CONDITION.  PROPELLER HUB DISASSEMBLED, AND FOUND A BROKEN PROPELLER RETURN SPRING WAS INTERFERING WITH THE HIGH PITCH STOP, SUCH THAT ONLY 27 DEGREES OF PITCH WERE ALLOWED INSTEAD OF 32 DEGREES.

---
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.