# NTSB MKC73FCJ40: Scorpion Single, N5406, Grand Island, NE, May 17, 1973

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: May 17, 1973
- Place: Grand Island, NE · GRAND ISLAND, NE
- Location: 40.9214° N, 98.3586° W: Placed by OpenAirDocs: center of Grand Island, NE, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.9214&lon=-98.3586&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report June 28, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 190356
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC73FCJ40
- Page: https://openairdocs.org/ntsb/MKC73FCJ40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1390  73/5/17  NR.GRAND ISLAND,NEBR  SCORPION SINGLE     CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 31, 297
        TIME - 1845                    N5406               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 32 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GRAND ISLAND,NEB            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE INSPECTION OF AIRCRAFT (OWNER-PILOT)
           POWERPLANT - ENGINE STRUCTURE: MOUNT AND VIBRATION ISOLATORS
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - ATTEMPTED OPERATION BEYOND EXPERIENCE/ABILITY LEVEL
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         FIRE AFTER IMPACT
        REMARKS- UPPER ENG MOUNT WALK BEAM 7100-6 RIPPED AND TORN,BREAKS RUSTY.NO FORMAL COPTER TRAIN,SELF TAUGHT.
```

## Aircraft

- Registration: [N5406](https://openairdocs.org/deregistered/N5406-1973-07-23), registration cancelled 1973-07-23, S/N 1952526 (OpenAirDocs)
- Reported make and model: SCORPION SINGLE
- Registry model: [Moriarty SCORPION](https://openairdocs.org/model/moriarty-scorpion) (registry code 1300801) (OpenAirDocs)
- Category: Helicopter, amateur-built
- 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 19730517013089A](https://openairdocs.org/incident/19730517013089A), May 17, 1973: Amtr 1300801, Grand Island, NE, Destroyed. Upper eng mount walk beam 7100-6 ripped and torn,breaks rusty. No formal copter train,self taught.

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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