# NTSB CHI79DEG10: Douglas AD-4N, N91945, Harrison, OH, April 3, 1979

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 3, 1979
- Place: Harrison, OH · HARRISON, OH
- Location: 39.2566° N, 84.7862° W: Placed by OpenAirDocs: center of Harrison, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2566&lon=-84.7862&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report June 21, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 137568
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79DEG10
- Page: https://openairdocs.org/ntsb/CHI79DEG10

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0645   79/4/3    HARRISON,OH         DOUGLAS AD-4N       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 45, 978
        TIME - 1635                    N91945              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 171 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HARRISON
        DEPARTURE POINT             INTENDED DESTINATION
          YPSILANTI,MI                HARRISON,OH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           UNDERSHOOT                                               LANDING: FINAL APPROACH
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED DISTANCE AND ALTITUDE
           PILOT IN COMMAND - FAILED TO INITIATE GO-AROUND
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        REMARKS- PLT SET UP SLOWER THAN NORMAL FINAL APCH IN AN ATTEMPT TO ALLOW OTHER ACFT TO CLEAR RNWY.
```

## Aircraft

- Registration: [N91945](https://openairdocs.org/aircraft/N91945), registered now, S/N 126882-SF85, built 1952 (OpenAirDocs)
- Reported make and model: DOUGLAS AD-4N
- Registry model: [Douglas AD4-DW](https://openairdocs.org/model/douglas-ad4-dw) (registry code 3026016) (OpenAirDocs)
- Registry engine: [Wright R3350-32WA](https://openairdocs.org/engine/wright-r3350-32wa) (registry code 67042, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Harrison

## 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 19790403006389A](https://openairdocs.org/incident/19790403006389A), Apr 3, 1979: Doug AD4NKALAERO, Harrison, OH, Substantial damage. Pilot landed short of runway. Right main gear broke off.

## Other investigations on N91945 (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 MIA92LA103](https://openairdocs.org/ntsb/MIA92LA103), Apr 4, 1992: Douglas AD4-DW (N91945), Titusville, FL, substantial damage, 1 fatal. Probable cause: THE PILOT IN COMMANDS APPROACH AT HIGHER THAN NORMAL AIRSPEED AND HIS LANDING THE AIRCRAFT AT HIGHER THAN NORMAL AIRSPEED AT A POINT ONE HALF TO THREE QUARTERS DOWN THE RUNWAY RESULTING IN THE…

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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