# Accident 20160802016729A: Air Tractor Inc AT-301, Weiser, ID, August 2, 2016

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 2, 2016, 09:30 local time
- Place: Weiser, ID
- Airport: Weiser Municipal Airport
- Damage: Substantial damage
- Phase of flight: Cruise/Level Flight
- Operating rules: Agricultural (Part 137)
- Operator: NRGG
- Location: 44.2203° N, 116.9075° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=44.2203&lon=-116.9075&mi=10
- Aircraft: N23923, a cancelled registration (https://openairdocs.org/deregistered/N23923-2018-07-17) (OpenAirDocs)
- Registry model: Air Tractor AT-301 (registry code 0390103, https://openairdocs.org/model/air-tractor-at-301) (OpenAirDocs)
- Registry engine: Pratt & Whitney R1340 series (registry code 52016, https://openairdocs.org/engine/pratt-whitney-r1340-series) (OpenAirDocs)
- Reported make and model: AIR TRACTOR INC AT-301
- Reported engine: P&W R1340 SERIES
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Airline transport
- Pilot flight hours: 9,800 total, 100 in this make and model, 100 in the last 90 days
- NTSB investigation: [NTSB WPR16LA159](https://openairdocs.org/ntsb/WPR16LA159) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20160802016729A

## Narrative

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

PILOT REPORTED THAT AFTER DEPARTING WEISER AIRPORT (S87) WITH A LOAD OF LIQUID SULFUR, HE NOTED THE CYLINDER HEAD TEMPERATURE (CHT) WAS INCREASING. HE ATTEMPTED TO LIGHTEN THE LOAD BY APPLYING THE SULFUR TO THE FIELD BUT NOTED THAT THE CHT WAS CONTINUING TO INCREASE AND ENGINE POWER WAS DECREASING. THE PILOT WAS ABLE TO JETTISION THE REMAINING SULFUR AND MAKE A FORCED LANDING INTO A FIELD.

DURING THE LANDING THE RIGHT WING IMPACTED VEGETATION WHICH CAUSED THE AIRPLANE TO ROTATE, FOLLOWED BY THE LEFT MAIN LANDING GEAR SEPARATING FROM THE FUSELAGE.

## 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 WPR16LA159](https://openairdocs.org/ntsb/WPR16LA159), Aug 2, 2016: Air Tractor AT 301 (N23923), Weiser, ID, substantial damage. Probable cause: A partial loss of engine power due to an internal catastrophic failure of the master rod crankpin bearing.

## Other reports on N23923 (1)

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

- [Incident 20150307002029I](https://openairdocs.org/incident/20150307002029I), Mar 7, 2015: Air Tractor Inc AT-301 (N23923), Ontario, OR, Minor damage. Annual inspection had just been completed and the pilot was ferrying the aircraft back to Ontario, OR for the owner. Runway 14 was active and with additional…

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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