# NTSB CHI72AC083: Short Bros SC-7-3, N725R, Lacrosse, WI, April 14, 1972

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: April 14, 1972
- 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: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report March 24, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 166831
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI72AC083
- Page: https://openairdocs.org/ntsb/CHI72AC083

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3704  72/4/14    LACROSSE,WIS        SHORT BROS SC-7-3   CR-  1  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0404                    N725R               PX-  0  0  0  COMMUTER AIR CARRIER      AGE 29, 6474 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0  AIR TAXI-CARGO S-D        791 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - LACROSSE MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          CHICAGO,ILL                 LACROSSE,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           SYSTEMS - FLIGHT CONTROL SYSTEMS: WING FLAP CONTROL SYSTEM HYDRAULIC
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - ASYMETRICAL FLAPS
        REMARKS- CONTROL ROD P/NS.C7.45.2135.COMPRESSION OVERLOAD.
```

## Aircraft

- Registration: [N725R](https://openairdocs.org/deregistered/N725R-1972-06-28), registration cancelled 1972-06-28, S/N SH1841 (OpenAirDocs)
- Reported make and model: SHORT BROS SC-7-3
- Registry model: [Short Bros. & Harland SC7 SERIES 2](https://openairdocs.org/model/short-bros-harland-sc7-series-2) (registry code 8100510) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Destroyed
- Airport: Lacrosse Muni

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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