# NTSB DEN88DTK01: Eagle DW-1, N8802Z, Ferney, SD, June 4, 1988

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: June 4, 1988, 07:30 local (12:30 UTC)
- Place: Ferney, SD
- Coordinates: 45.329715, -98.090034 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.3297&lon=-98.0900&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report June 9, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 17332
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN88DTK01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17332/pdf
- Page: https://openairdocs.org/ntsb/DEN88DTK01

## Sequence of events

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

- In flight encounter with weather, maneuvering - aerial application
  - weather condition - turbulence (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
- Loss of control - in flight, maneuvering - aerial application
  - airspeed - not maintained, pilot in command (cause)
  - stall/spin - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE AG PLT REPORTED THAT HE ENCOUNTERED A 'DUST DEVIL' WHILE IN A CLIMBING TURN DURING A TURNAROUND AT THE END OF A SWATH RUN. HE SAID HE ATTEMPTED TO COUNTER THE TURBULENCE ENDUCED ROLL WITH APPROPRIATE FLT CONTROL INPUTS BUT THE ACFT DID NOT RECOVER AND BEGAN AN OUT-OF-CONTROL DESCENT TO THE GROUND.

## Aircraft

- Registration: [N8802Z](https://openairdocs.org/aircraft/N8802Z), registered now, S/N DW-1-1002081, built 1981 (OpenAirDocs)
- Reported make and model: Eagle Aircraft Co. DW-1
- Registry model: [Eagle EAGLE DW-1](https://openairdocs.org/model/eagle-eagle-dw-1) (registry code 3230203) (OpenAirDocs)
- Registry engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1002081
- Airframe hours: 899
- Engines: LYCOMING IO-540-M1B5D 300 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Operator: Husky Spray Service, Inc.
- Registered owner: Husky Spray Service Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 25, 1988, 100 hours before
- Departed: NONE, STRATFORD, SD
- Destination: NONE, FERNEY, SD

## 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: 1,800 total, 550 in this make and model, 100 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 70 °F

## 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 19880604018469A](https://openairdocs.org/incident/19880604018469A), Jun 4, 1988: Eagle DW1, Ferney, SD, Destroyed. In slow climbing turn,cyclonic turbulence induced inverted flat spin situation. Pilot unable to recover, crashed.

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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