# NTSB DEN71AD008: Cessna 210D, N3952Y, Yellowstn Prk, WY, August 22, 1970

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 22, 1970
- Place: Yellowstn Prk, WY · YELLOWSTN PRK, WY
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 4 fatal
- Status: Completed, report January 8, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 112967
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN71AD008
- Page: https://openairdocs.org/ntsb/DEN71AD008

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1504  70/8/22    YELLOWSTN PRK,WYO   CESSNA 210D         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 53, 911
        TIME - 1415                    N3952Y              PX-  3  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 197 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          RAPID CITY,S DAK            W.YELLOWSTONE,MONT           SHERIDAN,WYO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
        FACTOR(S)
           WEATHER - HIGH DENSITY ALTITUDE
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY LOADED AIRCRAFT-WEIGHT-AND/OR C.G.
           MISCELLANEOUS ACTS,CONDITIONS - FLEW INTO BLIND CANYON
        WEATHER BRIEFING - UNKNOWN/NOT REPORTED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      90
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      VFR
        REMARKS- RECOVERY DATE 8/24/70.DENSITY ALT ABOUT 12200 FT.OVER MAX GROSS WT ABOUT 40 LBS.CRASHED IN CREEK.
```

## Aircraft

- Registration: [N3952Y](https://openairdocs.org/deregistered/N3952Y-1971-02-19), registration cancelled 1971-02-19, S/N 21058452 (OpenAirDocs)
- Reported make and model: CESSNA 210D
- Registry model: [Cessna 210D](https://openairdocs.org/model/cessna-210d) (registry code 2073414) (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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