# NTSB DEN84LA105: Callair A, N8260H, Tremonton, UT, March 6, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 6, 1984, 10:00 local (17:00 UTC)
- Place: Tremonton, UT
- Location: 41.7170° N, 112.1873° W: Placed by OpenAirDocs: center of Tremonton, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.7170&lon=-112.1873&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 16348
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN84LA105
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/16348/pdf
- Page: https://openairdocs.org/ntsb/DEN84LA105

## 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
  - weather condition - clouds (contributing factor)
  - weather condition - haze/smoke (contributing factor)
  - terrain condition - snow covered (contributing factor)
  - weather condition - whiteout (contributing factor)
  - altitude - misjudged, pilot in command (cause)
  - visual/aural perception, pilot in command (contributing factor)
  - terrain condition - rising (contributing factor)
  - clearance - misjudged, pilot in command (cause)
- Main gear collapsed, maneuvering - aerial application
  - landing gear,main gear - overload

## Analysis

THE ACFT COLLIDED WITH A SNOW COVERED FIELD WHILE THE PLT WAS APPLYING CARBON BLACK AND FERTILIZER TO INDUCE SNOW MELT. THE OVERCAST SKY'GAVE A WHITE-OUT EFFECT ON DEPTH PERCEPTION'. THE COLLISION WITH A RISE IN THE FIELD TORE OFF THE LANDING GEAR AND THE ACFT SLID TO A STOP IN THE SNOW.

## Aircraft

- Registration: [N8260H](https://openairdocs.org/deregistered/N8260H-2014-11-19), registration cancelled 2014-11-19, S/N 1133, built 1965 (OpenAirDocs)
- Reported make and model: CALLAIR A
- Registry model: [Callair A](https://openairdocs.org/model/callair-a) (registry code 1850102) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1133
- Airframe hours: 3731
- Engines: LYCOMING O-540-G2A5 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Wayne Larsen
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, March 26, 1983, 57 hours before
- Departed: U27, TREMONTON, UT

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 8,673 total, 8,673 as pilot in command, 74 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 30 statute miles
- Lowest ceiling: 12,000 ft overcast

## 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 19840306006509A](https://openairdocs.org/incident/19840306006509A), Mar 6, 1984: Airpts A9A, Tremonton, UT, Substantial damage. Impacted a snow covered rise in a field being sprayed with carbon black. Overcast haze and snow made a whiteout.

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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