# NTSB DEN86LA133: Eagle DW-1, N8812T, Walsh, CO, May 10, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 10, 1986, 15:00 local (21:00 UTC)
- Place: Walsh, CO
- Coordinates: 37.379714, -102.279113 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.3797&lon=-102.2791&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16961
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA133
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16961/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA133

## Sequence of events

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

- On ground/water encounter with weather, landing - roll
  - weather condition - unfavorable wind (cause)
- Dragged wing,rotor,pod,float or tail/skid, landing - roll
  - remedial action - not possible, pilot in command (contributing factor)
- Nose over, landing - roll
  - brakes(normal) - improper use of, pilot in command (cause)

## Analysis

THE PLT REPORTS THAT HE WAS LANDING TO THE SOUTH ON THE TURF RWY WITH CALM WINDS WHEN THE ACCIDENT OCCURRED. HE SAID THE LANDING WAS NORMAL UNTIL THE ACFT SLOWED TO 40 TO 50 MPH AT WHICH TIME A WHIRLWIND WAS ENCOUNTERED WHICH LIFTED THE RIGHT WING. THE LEFT WING CONTACTED THE GROUND AND THE ACFT NOSED OVER. THE PLT ALSO STATED THAT HE MAY HAVE APPLIED THE BRAKES WHEN THE LEFT WING HIT THE GROUND.

## Aircraft

- Registration: [N8812T](https://openairdocs.org/deregistered/N8812T-1997-08-26), registration cancelled 1997-08-26, S/N DW1007682 (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)
- Category: Airplane
- Serial number: 0076-82
- Airframe hours: 709
- Engines: LYCOMING IO-540-M1B5D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Ogle Cogburn
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 30, 1986, 20 hours before
- Airport: 0K0, Griffin Field, runway 17, 3,200 × 100 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; flight hours: 1,920 total, 425 in this make and model, 1,860 as pilot in command, 30 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 19 °F
- Altimeter: 29.00 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 19860510019669A](https://openairdocs.org/incident/19860510019669A), May 10, 1986: Eagle DW1, Walsh, CO, Substantial damage. On landing roll, whirlwind lifted the right wing. Left wing struck the ground. Nosed over after brakes applied.

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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