# NTSB MKC85LA107: Ayres S2R-600, N4017W, Harrisburg, AR, May 20, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 20, 1985, 12:30 local (17:30 UTC)
- Place: Harrisburg, AR
- Coordinates: 35.55994, -90.720405 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.5599&lon=-90.7204&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33946
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC85LA107
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33946/pdf
- Page: https://openairdocs.org/ntsb/MKC85LA107

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with terrain/water, maneuvering - aerial application
  - terrain condition - dirt bank/rising embankment
  - clearance - misjudged, pilot in command (cause)

## Analysis

PLT REPORTS THAT THE LT WING OF N4017N HIT A DIKE IN A RICEFIELD WHILE HE WAS MAKING A TRIM SWATH. THERE WERE NO INDICATIONS OF EQUIPMENT MALFUNCTION.

## Aircraft

- Registration: [N4017W](https://openairdocs.org/deregistered/N4017W-2012-11-15), registration cancelled 2012-11-15, S/N 2560R, built 1980 (OpenAirDocs)
- Reported make and model: Ayres S2R-600
- Registry model: [Ayres S2R-600](https://openairdocs.org/model/ayres-s2r-600) (registry code 0970102) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2560R
- Airframe hours: 1630
- Engines: P&W R1340 SERIES 600 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Grubbs And Johnson Aero
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 25, 1985, 30 hours before
- Airport: Unknown

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 7,005 as pilot in command, 69 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 10 knots, gusting 15
- Visibility: 12 statute miles
- Lowest ceiling: 7,000 ft unknown
- Temperature: 81 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19850520018459A](https://openairdocs.org/incident/19850520018459A), May 20, 1985: Ayres S2RR1340REST, Harrisburg, AR, Destroyed. Left wing hit a dike during swath run, aircraft cartwheeled.

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.

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