# Accident 19950717019149A: Airtrc AT301, Roberts, ID, July 17, 1995

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 17, 1995, 08:15 local time
- Place: Roberts, ID
- Damage: Substantial damage
- Phase of flight: Forced/Precautionary Landing
- Operating rules: Agricultural (Part 137)
- Operator: HNBG
- Location: 43.7302° N, 112.2609° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.7302&lon=-112.2609&mi=10
- Aircraft: N4326S, registered now (https://openairdocs.org/aircraft/N4326S) (OpenAirDocs)
- Registry model: Air Tractor AT-301 (registry code 0390103, https://openairdocs.org/model/air-tractor-at-301) (OpenAirDocs)
- Registry engine: Pratt & Whitney R-985 series (registry code 52008, https://openairdocs.org/engine/pratt-whitney-r-985-series) (OpenAirDocs)
- Reported make and model: AIRTRC AT301
- Reported engine: PWA R1340AN1
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 8,554 total, 3,301 in this make and model, 220 in the last 90 days
- NTSB investigation: [NTSB SEA95LA154](https://openairdocs.org/ntsb/SEA95LA154) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19950717019149A

## Narrative

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

LOST POWER ON TAKEOFF. FLIPPED AND CARTHWEELED LANDING IN BARLEY. EXHAUST VALVE ROCKER ARM SHAFT HAD FAILED.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA95LA154](https://openairdocs.org/ntsb/SEA95LA154), Jul 17, 1995: Air Tractor AT-301 (N4326S), Roberts, ID, substantial damage. Probable cause: A LOSS OF ENGINE POWER DUE TO THE SEPARATION OF THE NUMBER 3 CYLINDER EXHAUST VALVE ROCKER ARM SHAFT FROM THE CYLINDER HEAD, WHICH DISABLED MOVEMENT OF THE EXHAUST VALVE. A FACTOR WAS THE LACK OF…

## Other reports on N4326S (3)

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

- [Accident 20220801007619A](https://openairdocs.org/incident/20220801007619A), Aug 1, 2022: Air Tractor Inc AT-301 (N4326S), Leon, IA, Destroyed. Pilot experienced lack of engine performance for unknown reasons while enroute to the field to be sprayed. The aircraft impacted a heavy wooded area causing a…
- [Accident 19980519010269A](https://openairdocs.org/incident/19980519010269A), May 19, 1998: Airtrc AT301 (N4326S), Idaho Falls, ID, Substantial damage. Acft landed downwind on a dirt strip and a gust of wind caught the tail and flipped the acft over. (.4)as the pilot approached the agricultural application…
- [Accident 19820718030149A](https://openairdocs.org/incident/19820718030149A), Jul 18, 1982: Airtrc AT300 (N4326S), San Joaquin, CA, Substantial damage. Crash occurred during emergency landing after engine failed for unknown reasons.

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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