# NTSB DEN66D0244: Cessna 170B, N3507C, Leadville, CO, February 6, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: February 6, 1966
- Place: Leadville, CO · LEADVILLE, CO
- Location: 39.2473° N, 106.2935° W: Placed by OpenAirDocs: center of Leadville, CO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2473&lon=-106.2935&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious, 2 minor
- Status: Completed, report December 8, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 174192
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN66D0244
- Page: https://openairdocs.org/ntsb/DEN66D0244

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0352   66/2/6    LEADVILLE COLO      CESSNA 170B         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 33, 160
        TIME - 1400                    N3507C              PX-  0  1  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 40 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           WEATHER - DOWNDRAFT,UPDRAFTS
        FACTOR(S)
           WEATHER - SNOW
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, IN PERSON
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                 UNKNOWN/NOT REPORTED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          3 MILES OR LESS                                          SNOW SHOWERS
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          BLOWING SNOW                                              35
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          215                                                       6
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
        REMARKS- PILOT INEXPERIENCED IN MOUNTAIN FLYING.
```

## Aircraft

- Registration: [N3507C](https://openairdocs.org/deregistered/N3507C-1966-04-12), registration cancelled 1966-04-12, S/N 26550 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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