# NTSB DEN99LA068: Weatherly 201-C, N9095W, Two Buttes, CO, April 28, 1999

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 28, 1999, 11:30 local (17:30 UTC)
- Place: Two Buttes, CO
- Coordinates: 37.559532, -102.38906 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.5595&lon=-102.3891&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 22, 2000
- Report: Approved by Office Director
- NTSB case key (mKey): 46250
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN99LA068
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46250/pdf
- Page: https://openairdocs.org/ntsb/DEN99LA068

## Probable cause

The pilot's selection of an unsuitable landing area.  Factors associated with the accident were an unknown object in the landing area, a failure of a main landing gear tire, and the pilot's inadvertent ground loop/swerve.

## Sequence of events

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

- On ground/water collision with object, landing - roll
  - object - undetermined (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
- Loss of control - on ground/water, landing - roll
  - landing gear,tire - failure (contributing factor)
  - ground loop/swerve - inadvertent, pilot in command (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch

## Analysis

The pilot said that during the landing roll on a dirt county road, the left main tire hit something and 'blew out.' The airplane veered left, encountered a ditch, and rotated perpendicular to the road.  The left main landing gear broke off, and the left wing and the bottom of the fuselage were damaged.

## Factual narrative

On April 28, 1999, approximately 1130 mountain daylight time, a Weatherly 201-C, N9095W, was substantially damaged during landing roll near Two Buttes, Colorado.  The commercial pilot, the sole occupant in the airplane, was not injured.  The airplane was owned by the pilot and operated by TAT, Inc., as an agricultural flight under Title 14 CFR Part 137.  Visual meteorological conditions prevailed for the aerial application flight which originated approximately 40 minutes before the accident.  No flight plan had been filed.

The pilot said that during the landing roll on a dirt county road, the left main tire hit something and "blew out."  The airplane veered left, encountered a ditch, and rotated perpendicular to the road.  The left main landing gear broke off, and the left wing and the bottom of the fuselage were damaged.

## Aircraft

- Registration: [N9095W](https://openairdocs.org/aircraft/N9095W), registered now, S/N 1027, built 1977 (OpenAirDocs)
- Reported make and model: Weatherly 201-C
- Registry model: [Weatherly 201C](https://openairdocs.org/model/weatherly-201c) (registry code 9630410) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane
- Serial number: 1027
- Airframe hours: 3298
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Ronald E. Turner
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 1, 1999, 15 hours before
- Departed: NONE
- Airport: runway 18, 3,000 × 50 ft, dirt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 10,871 total, 2,299 in this make and model, 10,776 as pilot in command, 15 in the last 90 days, 15 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 8 knots
- Visibility: 20 statute miles
- Lowest ceiling: 1,000 ft broken
- Temperature: 63 °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 19990428047719A](https://openairdocs.org/incident/19990428047719A), Apr 28, 1999: Wthrly 201C, Two Buttes, CO, Substantial damage. (.4) The pilot said that during the landing roll on a dirt county road, the left main tire hit something and 'blew out.' The airplane veered left, encountered…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.