# SDR 2016FA0000498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2016
- Submitted: October 12, 2016
- Operation: General aviation
- Aircraft: [N6984B](https://openairdocs.org/aircraft/N6984B), registered now
- Make and model: Piper PA-18
- Registry model: [Piper PA-18](https://openairdocs.org/model/piper-pa-18) (OpenAirDocs)
- Aircraft serial: 185106
- Engine: Lyc O320*
- System (JASC): [8520 · Reciprocating Engine Power Section](https://openairdocs.org/jasc/8520)
- Part: Piston Ring
- Condition: Out Of Alignment
- Location: Nr 3 Cylinder
- Stage of operation: TO
- How discovered: O
- Nature of condition: W, R, Y
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2016FA0000498

## Discrepancy

DURING TAKE OFF, WITH GLIDER IN TOW, AIRCRAFT EXPERIENCED AN UNCOMMANDED ENGINE SHUT DOWN.  INVESTIGATION REVEALED THAT THE NR 3 PISTON RINGS WERE NOT INSTALLED PROPERLY.

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