# NTSB DEN90DTE05: Cessna 188B, N4933Q, Eckley, CO, August 20, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 20, 1990, 10:45 local (16:45 UTC)
- Place: Eckley, CO
- Coordinates: 40.119052, -102.720458 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.1191&lon=-102.7205&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 17797
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN90DTE05
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17797/pdf
- Page: https://openairdocs.org/ntsb/DEN90DTE05

## Probable cause

A FAILURE ON THE PART OF THE PILOT IN COMMAND TO MAINTAIN ADEQUATE TERRAIN CLEARANCE.

## 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 - ditch
  - altitude - inadequate, pilot in command (cause)
- Forced landing, maneuvering - turn to landing area (emergency)
- Main gear collapsed, landing

## Analysis

WHILE CONDUCTING A SWATH RUN DURING AGRICUTURAL CHEMICAL APPLICATION, THE PILOT FAILED TO MAINTAIN CLEARANCE FROM TERRAIN AND COLLIDED WITH A DITCH.

## Aircraft

- Registration: [N4933Q](https://openairdocs.org/aircraft/N4933Q), registered now, S/N 18802668T, built 1976 (OpenAirDocs)
- Reported make and model: CESSNA 188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18802668T
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Yuma Ag Service, Inc., doing business as Central States Ag, Inc.
- Departed: 2V6, YUMA, CO
- Destination: 2V6

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 1,562 total, 1,300 in this make and model, 1,473 as pilot in command, 214 in the last 90 days, 150 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 6 knots
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: AKO, 48 nm away

## 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 19900820034349A](https://openairdocs.org/incident/19900820034349A), Aug 20, 1990: Cessna A188B, Yuma, AZ, Substantial damage. Struck an erosion ditch during a spray run severing right main gear and ground looped. Engine was at full power.

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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