# SDR CA140703003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 1, 2014
- Submitted: March 12, 2015
- Operation: General aviation
- Make and model: Piper PA-31
- Registry model: [Piper PA-31](https://openairdocs.org/model/piper-pa-31) (OpenAirDocs)
- Aircraft time: 18,174 hours
- Engine: Lyc TIO540A2B
- System (JASC): [7414 · Magneto/Distributor](https://openairdocs.org/jasc/7414)
- Part: Magneto
- Part number: 103492901
- Condition: Malfunctioned
- Location: Lt Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: R
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA140703003

## Discrepancy

(CAN) ENGINE RUN-UP PRIOR TO FLIGHT WAS NORMAL.  IN CLIMBOUT, LT ENGINE BEGAN SURGING. PILOT RETURNED TO BASE.  ENGINE RUN-UP CARRIED OUT BY AMO INITIALLY SHOWED NORMAL. FURTHER TESTING AT HIGH POWER SHOWED SURGING. PROBLEM TRACED TO MAGNETO.

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