# Incident 19780606044699I: Ayres S2R, Circle, MT, June 6, 1978

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: June 6, 1978, 08:00 local time
- Place: Circle, MT
- Damage: Minor damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Agricultural (Part 137)
- Location: 47.4177° N, 105.5870° W: Placed by OpenAirDocs: center of Circle, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.4177&lon=-105.5870&mi=10
- Aircraft: N5686X, registered now (https://openairdocs.org/aircraft/N5686X) (OpenAirDocs)
- Registry model: Ayres S-2R (registry code 0970101, https://openairdocs.org/model/ayres-s-2r) (OpenAirDocs)
- Registry engine: Pratt & Whitney R1340 series (registry code 52016, https://openairdocs.org/engine/pratt-whitney-r1340-series) (OpenAirDocs)
- Reported make and model: AYRES S2R
- Fatal injuries: 0
- Pilot flight hours: 5,500 total, 700 in this make and model, 0 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19780606044699I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

ENGINE STOPPED DUE TO A BROKEN ROCKER ARM BOSS AT INTAKE VALVE.

## Other reports on N5686X (5)

Matched to the same aircraft by N-number and date.

- [Incident 20120311004239I](https://openairdocs.org/incident/20120311004239I), Mar 11, 2012: Ayres Corporation S-2R (N5686X), Kennedyville, MD, Minor damage. Pilot was exercising his aircraft preparing to begin ag operations (part 137). After a 20 to 30 minute flight, the engine lost power. The pilot was unable to…
- [Accident 20040531010199A](https://openairdocs.org/incident/20040531010199A), May 31, 2004: Ayres S2RRESTD (N5686X), Beaver, UT, Substantial damage. (-23) Power failure during cruise flight. Emergency landing resulted in substantial damage to the aircraft. There were no injuries to the pilot.
- [Incident 20011108031649I](https://openairdocs.org/incident/20011108031649I), Nov 8, 2001: Ayres S2R (N5686X), Morgan, UT, Minor damage. (-23) Engine flamed out at 1000 ft above ground level after departing Morgan airport (2U). Pilot landed on the westbound lane of I-84 at mile marker 95. Minor…
- [Accident 19960606012939A](https://openairdocs.org/incident/19960606012939A), Jun 6, 1996: Ayres S2R (N5686X), Aberdeen, ID, Substantial damage. Pilot passed out returning to airport due g loads in steep turns stress and fatigue. Impacted level upright.
- [Accident 19811123078539A](https://openairdocs.org/incident/19811123078539A), Nov 23, 1981: Ayres S2RRESTD (N5686X), Richey, MT, Substantial damage. Pilot claims control problem with ailerons, but problem not established. Aircraft ran through fence and caught fire

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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