# NTSB OAK74AP008: Cessna 170B, N8015A, Mammoth Lks, CA, August 26, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 26, 1973
- Place: Mammoth Lks, CA · MAMMOTH LKS, 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: 2 fatal
- Status: Completed, report August 27, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 188966
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74AP008
- Page: https://openairdocs.org/ntsb/OAK74AP008

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2826  73/8/26    MAMMOTH LKS,CALIF   CESSNA 170B         CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 42, 496
        TIME - 1200                    N8015A              PX-  1  0  0  OTHER                     TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SAN JOSE,CALIF              BISHOP,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
        FACTOR(S)
           WEATHER - THUNDERSTORM ACTIVITY
           WEATHER - LOW CEILING
           TERRAIN - HIGH OBSTRUCTIONS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               0
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                     THUNDERSTORM
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          UNKNOWN/NOT REPORTED                                     IFR
        TYPE OF FLIGHT PLAN
          VFR
        REMARKS- TSTMS,LOW CEILINGS,MTN TOPS OBSCURED RTE OF FLT.FLEW INTO MTN.PLT TIME TO 7/1/72.RCVRD 7/21/74.
```

## Aircraft

- Registration: [N8015A](https://openairdocs.org/deregistered/N8015A-2018-08-18), registration cancelled 2018-08-18, S/N 20867, built 1952 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## 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 19730826043009A](https://openairdocs.org/incident/19730826043009A), Aug 26, 1973: Cessna 170B, Mammoth Lks, CA, Destroyed, 1 fatal. Tstms,low ceilings,mtn tops obscured rte of flt. Flew into mtn. Plt time to 7/1/72.rcvrd 7/21/74.

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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