# NTSB DEN82DA060: Cessna 170B, N3415D, Worden, MT, April 15, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: April 15, 1982, 13:30 local (20:30 UTC)
- Place: Worden, MT
- Coordinates: 45.889217, -108.090187 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.8892&lon=-108.0902&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 15, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 73095
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA060
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/73095/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA060

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - carburetor heat control - undetermined (cause)
  - weather condition - carburetor icing conditions (contributing factor)
  - fuel system,carburetor - ice (cause)
  - precautionary landing - initiated, pilot in command
  - go-around - performed, pilot in command
- Loss of engine power(total) - mech failure/malf, approach
  - fuel system,carburetor - ice (cause)
- Forced landing, landing
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE PILOT REPORTED THAT THE CARBURETOR HEAT CONTROL BECAME INOPERATIVE WHILE ON A CROSS-COUNTRY FLIGHT. THE WEATHER CONDITIONS WERE CONDUCIVE TO THE FORMATION OF CARBURETOR ICE. A DECISION WAS MADE TO LAND IN AN ALFALFA FIELD WHILE THE ENGINE WAS STILL OPERATIVE. ONE PASS WAS MADE OVER THE INTENDED LANDING AREA. DURING A GO-AROUND AND A PATTERN FOR LANDING, THE ENGINE LOST ALL POWER. THE PILOT WAS UNABLE TO GLIDE TO THE INTENDED LANDING AREA AND CRASH LANDED IN THE ONLY AVAILABLE OPEN FIELD.

## Aircraft

- Registration: [N3415D](https://openairdocs.org/aircraft/N3415D), registered now, S/N 26958, built 1955 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: Z6958
- Airframe hours: 2400
- Engines: CONTINENTAL O-300 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Howard S. Hash
- Registered owner: Howard S. Hash
- Departed: FORSYTH, MT
- Destination: BILLINGS, MT

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,705 total, 30 in this make and model, 2,565 as pilot in command, 111 in the last 90 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 10 knots
- Visibility: 5 statute miles
- Lowest ceiling: 5,000 ft overcast
- Temperature: 126 °F

## 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 19820415011859A](https://openairdocs.org/incident/19820415011859A), Apr 15, 1982: Cessna 170B, Ballantine, MT, Substantial damage. Carburetor heat became inoperative during icing condition. Engine quit due to carburetor ice. Crash-landed.

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.