# NTSB MKC75AK024: Bell 47G-5, N4064G, Moorhead, MN, October 15, 1974

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: October 15, 1974
- Place: Moorhead, MN · MOORHEAD, MN
- Location: 46.8647° N, 96.7446° W: Placed by OpenAirDocs: center of Moorhead, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.8647&lon=-96.7446&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report September 12, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 146412
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC75AK024
- Page: https://openairdocs.org/ntsb/MKC75AK024

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4344  74/10/15   MOORHEAD,MINN       BELL 47G-5          CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 32, 3710
        TIME - 1237                    N4064G              PX-  2  0  0  CTR PASSG-D               TOTAL HOURS, 2410 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          MINNEAPOLIS,MINN            FARGO,N DAK                  MONTEVIDEO,MINN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: TAIL ROTOR                      IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: TAIL ROTOR BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- TOTAL TIME ON BLADE 426HRS.AD70-10-8 NOT CW.
```

## Aircraft

- Registration: [N4064G](https://openairdocs.org/deregistered/N4064G-1975-10-06), registration cancelled 1975-10-06, S/N 7902 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (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 19741015044449A](https://openairdocs.org/incident/19741015044449A), Oct 15, 1974: Bell 47G5, Moorhead, MN, Destroyed, 2 fatal. Total time on blade 426HRS.AD70-10-8 not cw.

## Other investigations on N4064G (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 MKC74DER01](https://openairdocs.org/ntsb/MKC74DER01), Jul 20, 1973: Bell 47G-5 (N4064G), Bloomington, MN, 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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