# NTSB OAK74AP066: Piper PA-24, N7904P, Mammoth Lk, CA, June 9, 1974

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: June 9, 1974
- Place: Mammoth Lk, CA · MAMMOTH LK, CA
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 4 fatal
- Status: Completed, report January 28, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 132574
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74AP066
- Page: https://openairdocs.org/ntsb/OAK74AP066

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3782   74/6/9    MAMMOTH LK,CALIF    PIPER PA-24         CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 55, 1028
        TIME - 0910                    N7904P              PX-  3  0  0  BUSINESS                  TOTAL HOURS, 406 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          MAMMOTH LK,CALIF            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           PILOT IN COMMAND - PHYSICAL IMPAIRMENT
        REMARKS- ACFT OBSVD IN L TURN WHICH STEEPENED UNTIL NOSE LOW IMPACT.PLT HAD RECENT SPINAL DISC REMOVAL.
```

## Aircraft

- Registration: [N7904P](https://openairdocs.org/deregistered/N7904P-1974-08-20), registration cancelled 1974-08-20, S/N 24-3135 (OpenAirDocs)
- Reported make and model: PIPER PA-24
- Registry model: [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250) (registry code 7102404) (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 19740609018639A](https://openairdocs.org/incident/19740609018639A), Jun 9, 1974: Piper PA24250, Mammoth Lk, CA, Destroyed, 3 fatal. Acft obsvd in l turn which steepened until nose low impact. Plt had recent spinal disc removal.

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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