# NTSB OAK69F0081: Cessna 140, N2033N, Mammoth Lakes, CA, August 5, 1968

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 5, 1968
- Place: Mammoth Lakes, CA · MAMMOTH LAKES, CA
- Location: 37.6244° N, 118.9884° W: Placed by OpenAirDocs: center of Mammoth Lakes, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.6244&lon=-118.9884&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal, 1 minor
- Status: Completed, report October 9, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 109365
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK69F0081
- Page: https://openairdocs.org/ntsb/OAK69F0081

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2606   68/8/5    MAMMOTH LAKES,CAL   CESSNA 140          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 56, 250
        TIME - 1228                    N2033N              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 200 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: CLIMB TO CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - FLEW INTO BLIND CANYON
           WEATHER - HIGH DENSITY ALTITUDE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        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                                                      65
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          250                                                       15
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- DENSITY ALT 10000 FT.
```

## Aircraft

- Registration: [N2033N](https://openairdocs.org/deregistered/N2033N-1970-06-19), registration cancelled 1970-06-19, S/N 12269 (OpenAirDocs)
- Reported make and model: CESSNA 140
- Registry model: [Cessna 140](https://openairdocs.org/model/cessna-140) (registry code 2071602) (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.

---
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.