# NTSB CHI78FEP40: Beech B-23, N4003T, Lacrosse, WI, July 4, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 4, 1978
- Place: Lacrosse, WI · LACROSSE, WI
- Location: 43.8251° N, 91.2246° W: Placed by OpenAirDocs: center of La Crosse, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.8251&lon=-91.2246&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 27, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 140273
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78FEP40
- Page: https://openairdocs.org/ntsb/CHI78FEP40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3261   78/7/4    LACROSSE,WI         BEECH B-23          CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 33, 730
        TIME - 1920                    N4003T              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 239 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          WEST CHICAGO,IL             MINNEAPOLIS,MN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: CROP                                      LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - HIGH VEGETATION
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- #2 CYL EXHST VALVE BROKE & ENTERED OTHER CYLS.
```

## Aircraft

- Registration: [N4003T](https://openairdocs.org/aircraft/N4003T), registered now, S/N M-1109, built 1968 (OpenAirDocs)
- Reported make and model: BEECH B-23
- Registry model: [Beech B23](https://openairdocs.org/model/beech-b23) (registry code 1151240) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19780704022729A](https://openairdocs.org/incident/19780704022729A), Jul 4, 1978: Beech B23BEECH, Lacrosse, WI, Substantial damage. #2 Cyl exhst valve broke & entered other cyls.

## Other investigations on N4003T (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 MIA70D0133](https://openairdocs.org/ntsb/MIA70D0133), Jul 4, 1969: Beech B23 (N4003T), Monroeville, AL, 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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