# NTSB UNK65X0691: Cessna 170B, N2561D, Roberts, MT, November 13, 1964

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: November 13, 1964
- Place: Roberts, MT · ROBERTS, MT
- Location: 45.3436° N, 109.1818° W: Placed by OpenAirDocs: center of Roberts, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.3436&lon=-109.1818&mi=10
- Phase of flight: [Uncontrolled descent](https://openairdocs.org/ntsb-phases/650) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report March 16, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 181182
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK65X0691
- Page: https://openairdocs.org/ntsb/UNK65X0691

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0917  64/11/13 NR.ROBERTS MONT       CESSNA 170B         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 29, 250
        TIME - 2015                    N2561D              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 60 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
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
        FACTOR(S)
           WEATHER - LOW CEILING
           WEATHER - SNOW
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            VISIBILITY AT ACCIDENT SITE
          OBSCURATION                                              UNKNOWN/NOT REPORTED
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          BLOWING SNOW                                             IFR
        TYPE OF FLIGHT PLAN
          NONE
```

## Aircraft

- Registration: [N2561D](https://openairdocs.org/deregistered/N2561D-1964-12-15), registration cancelled 1964-12-15, S/N 20713 (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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