# NTSB MKC72DGD40: Fournier RF4D, N7752, Sibley, IA, July 12, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 12, 1971
- Place: Sibley, IA · SIBLEY, IA
- Location: 43.4015° N, 95.7430° W: Placed by OpenAirDocs: center of Sibley, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.4015&lon=-95.7430&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 8, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 162410
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72DGD40
- Page: https://openairdocs.org/ntsb/MKC72DGD40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2658  71/7/12    SIBLEY,IOWA         FOURNIER RF4D       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 44, 1296
        TIME - 1630                    N7752               PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 120 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - SIBLEY
        DEPARTURE POINT             INTENDED DESTINATION
          SIBLEY,IOWA                 MILFORD,IOWA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            TAKEOFF: INITIAL CLIMB
           STALL: MUSH                                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - CHECKLIST-FAILED TO USE
           AIRFRAME - FUSELAGE: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPERLY SECURED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  DOOR/PANEL OPEN
        REMARKS- FAILED TO LOCK COCKPIT CANOPY.BLEW OPEN AFTER TKOF DISRUPTED AIRFLOW.ACFT UNCTLBL.
```

## Aircraft

- Registration: [N7752](https://openairdocs.org/deregistered/N7752-1991-04-23), registration cancelled 1991-04-23, S/N 4119 (OpenAirDocs)
- Reported make and model: FOURNIER RF4D
- Registry model: [Sportavia-Putzer FOURNIER R.F.4.D](https://openairdocs.org/model/sportavia-putzer-fournier-r-f-4-d) (registry code 8451012) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sibley

## Other investigations on N7752 (2)

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 OAK77DVW28](https://openairdocs.org/ntsb/OAK77DVW28), Jul 31, 1977: Fournier RF4D (N7752), Tonopah, NV, substantial damage
- [NTSB MKC70D0149](https://openairdocs.org/ntsb/MKC70D0149), Aug 28, 1969: Fournier RF-4D (N7752), Pella, IA, 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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