# NTSB OAK75FVG66: Bell 47D-1, N342L, Sacramento, CA, May 13, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 13, 1975
- Place: Sacramento, CA · SACRAMENTO, CA
- Location: 38.5816° N, 121.4944° W: Placed by OpenAirDocs: center of Sacramento, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.5816&lon=-121.4944&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 3, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148568
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK75FVG66
- Page: https://openairdocs.org/ntsb/OAK75FVG66

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0946  75/5/13  NR.SACRAMENTO,CA      BELL 47D-1          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 37, 4075
        TIME - 1730                    N342L               PX-  0  0  1  PRACTICE                  TOTAL HOURS, 55 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         SACRAMENTO,CA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        REMARKS- M/R BLADES HIT TAIL BOOM. PRACTICE AUTOROTATION.
```

## Aircraft

- Registration: [N342L](https://openairdocs.org/deregistered/N342L-2013-08-14), registration cancelled 2013-08-14, S/N 611, built 1952 (OpenAirDocs)
- Reported make and model: BELL 47D-1
- Registry model: [Bell 47D1](https://openairdocs.org/model/bell-47d1) (registry code 1180802) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19750513009979A](https://openairdocs.org/incident/19750513009979A), May 13, 1975: Bell 47G, Sacramento, CA, Substantial damage. M/r blades hit tail boom. Practice autorotation.

## Other investigations on N342L (1)

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.

- [NTSB MIA89LA133](https://openairdocs.org/ntsb/MIA89LA133), Apr 17, 1989: Bell 47D1 (N342L), Miami, FL, substantial damage. Probable cause: THE UNQUALIFIED PERSONS FAILURE TO MAINTAIN CLEARANCE FROM THE FENCE. PRESSURE INDUCED BY OTHERS, LACK OF EXPERIENCE, AND OVER CONFIDENCE IN PERSONAL ABILITY ARE CONTRIBUTING FACTORS TO THIS ACCIDENT.

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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