# NTSB CHI78DEP35: Mustang II, N4790, Lancaster, WI, May 21, 1978

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 21, 1978
- Place: Lancaster, WI · LANCASTER, WI
- Location: 42.8461° N, 90.7058° W: Placed by OpenAirDocs: center of Lancaster, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.8461&lon=-90.7058&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report August 15, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 141995
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78DEP35
- Page: https://openairdocs.org/ntsb/CHI78DEP35

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1424  78/5/21    LANCASTER,WI        MUSTANG II          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 47, 1100
        TIME - 1430                    N4790               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 5 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - LANCASTER
        DEPARTURE POINT             INTENDED DESTINATION
          LANCASTER,WI                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 TAKEOFF: RUN
           NOSE OVER/DOWN                                           TAKEOFF: RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           PILOT IN COMMAND - IMPROPER OPERATION OF BRAKES AND/OR FLIGHT CONTROLS
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
```

## Aircraft

- Registration: [N4790](https://openairdocs.org/deregistered/N4790-2012-12-13), registration cancelled 2012-12-13, S/N 85, built 1978 (OpenAirDocs)
- Reported make and model: MUSTANG II
- Registry model: [Krogman BUSBY MUSTANG II](https://openairdocs.org/model/krogman-busby-mustang-ii) (registry code 0562472) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Lancaster

## 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 19780521016069A](https://openairdocs.org/incident/19780521016069A), May 21, 1978: Kinner SPORTSTERK, Lancaster, WI, 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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