# NTSB NYC67D0144: Helio 391B, N4141D, Morristown, NJ, July 10, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 10, 1966
- Place: Morristown, NJ · MORRISTOWN, NJ
- Location: 40.7966° N, 74.4773° W: Placed by OpenAirDocs: center of Morristown, NJ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.7966&lon=-74.4773&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 13, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 178690
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC67D0144
- Page: https://openairdocs.org/ntsb/NYC67D0144

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2086  66/7/10    MORRISTOWN NJ       HELIO 391B          CR-  0  0  2  NONCOMMERCIAL             PRIVATE, AGE 53, 474
        TIME - 1500                    N4141D              PX-  0  0  0  PRACTICE                  TOTAL HOURS, 212 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - MORRISON PRIVATE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
        PROBABLE CAUSE(S)
           DUAL STUDENT - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
           PILOT IN COMMAND - EXERCISED POOR JUDGMENT
        REMARKS- PRIVATE PILOT, NOT INSTRUCTOR RATED, WITH NO BRAKES HIS POSITION ALLOWED STUDENT LAND AIRCRAFT.
```

## Aircraft

- Registration: N4141D (not matched to a registry record)
- Reported make and model: HELIO 391B
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Morrison Private

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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