# NTSB OAK73FXQ04: Concept 70, N44CW, Minden, NV, July 19, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 19, 1972
- Place: Minden, NV · MINDEN, NV
- Location: 38.9646° N, 119.7666° W: Placed by OpenAirDocs: center of Minden, NV, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.9646&lon=-119.7666&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report February 26, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 168161
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK73FXQ04
- Page: https://openairdocs.org/ntsb/OAK73FXQ04

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2604  72/7/19    MINDEN,NEV          CONCEPT 70          CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, FL.INSTR.,
        TIME - 1227                    N44CW               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  AGE 38, 5300 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            65 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - DOUGLAS COUNTY
        DEPARTURE POINT             INTENDED DESTINATION
          MINDEN,NEV                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           AIRFRAME - WINGS: WING ATTACHMENT FITTINGS,BOLTS
           MISCELLANEOUS ACTS,CONDITIONS - FLUTTER
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        EMERGENCY CIRCUMSTANCES - AIRFRAME BUFFET
        REMARKS- SPEED REACHED RED LINE 120K IAS WHEN FLUTTER STARTED FOLLOWED BY RT THEN LEFT WING SEPARATION.
```

## Aircraft

- Registration: [N44CW](https://openairdocs.org/deregistered/N44CW-2011-03-16), registration cancelled 2011-03-16, S/N 3 (OpenAirDocs)
- Reported make and model: CONCEPT 70
- Registry model: [Berkshire Mfg. CONCEPT 70](https://openairdocs.org/model/berkshire-mfg-concept-70) (registry code 1240104) (OpenAirDocs)
- Category: Glider, amateur-built
- Engines: none
- Damage: Destroyed
- Airport: Douglas County

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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