# NTSB MKC71DTK29: Alouette 2, N8398, Lake Norden, SD, May 16, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 16, 1971
- Place: Lake Norden, SD · LAKE NORDEN, SD
- Location: 44.5789° N, 97.2107° W: Placed by OpenAirDocs: center of Lake Norden, SD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.5789&lon=-97.2107&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 30, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 161096
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC71DTK29
- Page: https://openairdocs.org/ntsb/MKC71DTK29

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0690  71/5/16    LAKE NORDEN,S DAK   ALOUETTE 2          CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 49, 20000
        TIME - 1830                    N8398               PX-  0  0  2  FERRY                     TOTAL HOURS, 50 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          SIOUX FALLS,S DAK           LAKE NORDEN,S DAK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: TRAFFIC PATTERN-CIRCLING
           HARD LANDING                                             LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           POWERPLANT - MISCELLANEOUS: COMPRESSOR STALLS
           PILOT IN COMMAND - MISJUDGED SPEED AND ALTITUDE
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ENG SUBJCTD TO EXCESSIVE PWR DEMND CAUSING EXTREME OVERTEMP OPS,ENG STALL.
```

## Aircraft

- Registration: N8398 (not matched to a registry record)
- Reported make and model: ALOUETTE 2
- Category: Helicopter
- Engines: turbo shaft
- Damage: 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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