# NTSB DEN84LA170: Weatherly 201B, N1275W, Platteville, CO, June 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 7, 1984, 08:10 local (14:10 UTC)
- Place: Platteville, CO
- Coordinates: 40.210735, -104.820152 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.2107&lon=-104.8202&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16392
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA170
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16392/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA170

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - flight controls - improper use of, pilot in command (cause)
  - lack of total experience in kind of aircraft, pilot in command (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
- Nose over, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

THE AG PLT WAS RETURNING FOR HIS 3RD LOAD. HE SAID THAT AFTER A WHEEL LANDING, HE PULLED BACK ON THE STICK TO LOWER THE TAILWHEEL & THE ACFT BALLOONED BACK INTO THE AIR. THE PLT SAID THAT HE APPLIED POWER TO GO AROUND, BUT THE ACFT SETTLED & HE LOST DIRECTIONAL CONTROL. THE ACFT THEN VEERED OFF THE SIDE OF THE AIRSTRIP & NOSED OVER IN SOFT, SANDY TERRAIN.

## Aircraft

- Registration: [N1275W](https://openairdocs.org/deregistered/N1275W-2004-04-05), registration cancelled 2004-04-05, S/N 631, built 1974 (OpenAirDocs)
- Reported make and model: WEATHERLY 201B
- Registry model: [Weatherly 201B](https://openairdocs.org/model/weatherly-201b) (registry code 9630408) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 631
- Airframe hours: 2410
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: South Weld Ag Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 6, 1984
- Airport: 27V, Kugel-Strong

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 435 total, 30 in this make and model, 323 as pilot in command, 52 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: none

## 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 19840607023029A](https://openairdocs.org/incident/19840607023029A), Jun 7, 1984: Wthrly 201B, Platteville, CO, Substantial damage. Pilot lost directional control of aircraft during landing. Airplane flipped inverted in soft berm.

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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