# NTSB OAK74AP059: Bell 47G3B1, N73212, Lone Pine, CA, May 9, 1974

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: May 9, 1974
- Place: Lone Pine, CA · LONE PINE, CA
- Location: 36.5744° N, 118.0806° W: Placed by OpenAirDocs: center of Lone Pine, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5744&lon=-118.0806&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report November 8, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 125888
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74AP059
- Page: https://openairdocs.org/ntsb/OAK74AP059

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3046   74/5/9  NR.LONE PINE,CALIF    BELL 47G3B1         CR-  0  1  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1411                    N73212              PX-  0  0  0  AIR TAXI-PASSG            AGE 41, 5473 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            UNK/NR IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          BISHOP,CALIF               UNKNOWN/NOT REPORTED         LONE PINE,CALIF
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      STATIC: OTHER
           ROLL OVER                                                STATIC: OTHER
        PROBABLE CAUSE(S)
           ROTORCRAFT - ROTOR ASSEMBLIES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
         FIRE AFTER IMPACT
        REMARKS- PARKED ON MT RIDGE-ENGINE RUNNING.TAIL ROTOR DRIVE ASSY YOKE BROKE.P/N47-640-006-5.REASON UNDET.
```

## Aircraft

- Registration: [N73212](https://openairdocs.org/deregistered/N73212-1974-12-05), registration cancelled 1974-12-05, S/N 2748 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B](https://openairdocs.org/model/bell-47g-3b) (registry code 1181026) (OpenAirDocs)
- Category: Helicopter
- 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 19740509034669A](https://openairdocs.org/incident/19740509034669A), May 9, 1974: Bell 47G3B, Lone Pine, CA, Destroyed, 1 fatal. Parked on mt ridge-engine running. Tail rotor drive assy yoke broke.P/N47-640-006-5.reason undet.

## Other investigations on N73212 (2)

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 OAK73DVW12](https://openairdocs.org/ntsb/OAK73DVW12), Dec 25, 1972: Bell 47G3B1 (N73212), Bishop, CA, substantial damage
- [NTSB LAX71FUG57](https://openairdocs.org/ntsb/LAX71FUG57), Mar 18, 1971: Bell 47G3B (N73212), La Verne, CA, substantial damage

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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