# Accident 19901115050889A: Airtrc AT302, Somerton, AZ, November 15, 1990

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 15, 1990, 20:30 local time
- Place: Somerton, AZ
- Damage: Substantial damage
- Phase of flight: Fcd/Prec Ldg From Cruise
- Operating rules: Agricultural (Part 137)
- Operator: ZCKG
- Location: 32.5305° N, 114.7108° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=32.5305&lon=-114.7108&mi=10
- Aircraft: N4441S, a cancelled registration (https://openairdocs.org/deregistered/N4441S-2014-10-17) (OpenAirDocs)
- Registry model: Air Tractor AT-302 (registry code 0390104, https://openairdocs.org/model/air-tractor-at-302) (OpenAirDocs)
- Registry engine: Amateur-built UNKNOWN ENG (registry code 99999, https://openairdocs.org/engine/amateur-built-unknown-eng) (OpenAirDocs)
- Reported make and model: AIRTRC AT302
- Reported engine: PWA R1340AN1
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 8,300 total, 5,200 in this make and model, 400 in the last 90 days
- NTSB investigation: [NTSB LAX91DUJ03](https://openairdocs.org/ntsb/LAX91DUJ03) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19901115050889A

## Narrative

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

ENGINE QUIT ON SWATH RUN. NOSED OVER ON FORCED LANDING. STUCK VALVE CAUSED CYLINDER TO CRACK AND ENGINE 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 LAX91DUJ03](https://openairdocs.org/ntsb/LAX91DUJ03), Nov 16, 1990: Air Tractor AT-302 (N4441S), Somerton, AZ, substantial damage. Probable cause: THE FAILURE OF THE NUMBER 3 EXHAUST VALVE WHICH LED TO AN ENGINE FAILURE AND SUBSEQUENT CRASH LANDING.

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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