# NTSB SEA05CA132: Weatherly 620B, N2021V, Teton, ID, June 25, 2005

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: June 25, 2005, 11:00 local (17:00 UTC)
- Place: Teton, ID
- Coordinates: 43.888053, -111.668609
- Nearby events: https://openairdocs.org/map.md?lat=43.8881&lon=-111.6686&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 27, 2005
- Report: Approved by Office Director
- NTSB case key (mKey): 61825
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA05CA132
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61825/pdf
- Page: https://openairdocs.org/ntsb/SEA05CA132

## Probable cause

The pilot's failure to maintain clearance from power transmission lines while maneuvering.

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - clearance - not maintained, pilot in command (cause)
  - object - wire,transmission
  - low altitude flight/maneuver
  - weather condition - haze/smoke
- Loss of control - in flight, descent - uncontrolled
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

The pilot reported that he inadvertently "stepped" on a power line just as was completing a low level turn during a spray run.  After colliding with the power line, the airplane impacted terrain resulting in substantial damage to the airframe.  The pilot reported that there was haze and smoke in the area on the morning of the accident.

## Factual narrative

On July 25, 2005, about 1100 mountain daylight time, a Weatherly Aviation 620B, N2021V, sustained substantial damage after colliding with power transmission lines while maneuvering near Teton, Idaho.  The airplane is owned by Teton River Flying Service, Inc, Teton, Idaho, and was being operated as an aerial application flight under the provisions of Title 14, CFR Part 137, when the accident occurred. The commercial pilot was not injured. Visual meteorological conditions prevailed for the local agricultural flight.

In a telephone conversation with the National Transportation Safety Board (IIC), and subsequent written statement, the pilot reported that he inadvertently "stepped" on a power line just as was completing a low level turn during a spray run.  After colliding with the power line, the airplane impacted terrain resulting in substantial damage to the airframe.

The pilot reported that there was haze and smoke in the area on the morning of the accident.

## Aircraft

- Registration: [N2021V](https://openairdocs.org/deregistered/N2021V-2006-10-02), registration cancelled 2006-10-02, S/N 1572, built 1994 (OpenAirDocs)
- Reported make and model: Weatherly 620B
- Registry model: [Weatherly 620B](https://openairdocs.org/model/weatherly-620b) (registry code 9630605) (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: 1572
- Engines: Pratt & Whitney R-985 reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Teton River Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Departed: Teton, ID
- Destination: Teton, ID
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2; flight hours: 4,333 total, 2,100 in this make and model, 44 in the last 90 days, 40 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- 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 20050625013019A](https://openairdocs.org/incident/20050625013019A), Jun 25, 2005: Wthrly 620B, Rexburg, ID, Substantial damage. (-23) During descent into a field that was being sprayed the aircraft encountered turbulence and settled into the top wire of a 3 string power line causing the…

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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