# NTSB DIA69F0019: N.American SNJ4, N4140A, Frederick, MD, July 7, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 7, 1968
- Place: Frederick, MD · FREDERICK, MD
- Location: 39.4385° N, 77.4117° W: Placed by OpenAirDocs: center of Frederick, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.4385&lon=-77.4117&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 8, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 201085
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DIA69F0019
- Page: https://openairdocs.org/ntsb/DIA69F0019-201085

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1906   68/7/7    FREDERICK,MD        N.AMERICAN SNJ4     CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 34, 1618
        TIME - 1506                    N4140A              PX-  0  0  0  AIR SHOW/RACING           TOTAL HOURS, 500 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - FREDERICK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: ACROBATICS
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENGINE CUT OUT AFTER EXECUTION OF HAMMER HEAD STALL.SPECTATORS ON ARPT.LANDED IN CORN FIELD.
```

## Aircraft

- Registration: [N4140A](https://openairdocs.org/aircraft/N4140A), registered now, S/N 88-13625, built 1947 (OpenAirDocs)
- Reported make and model: N.AMERICAN SNJ4
- Registry model: [North American SNJ-4](https://openairdocs.org/model/north-american-snj-4) (registry code 6400414) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Frederick

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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