# NTSB CHI79FEE69: Benson B-8M, N65232, Rockford, IL, July 22, 1979

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 22, 1979
- Place: Rockford, IL · ROCKFORD, IL
- Location: 42.2711° N, 89.0940° W: Placed by OpenAirDocs: center of Rockford, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.2711&lon=-89.0940&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report April 21, 1980
- Report: Brief approved by the director
- NTSB case key (mKey): 133839
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79FEE69
- Page: https://openairdocs.org/ntsb/CHI79FEE69

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3521  79/7/22  NR.ROCKFORD,IL        BENSON B-8M         CR-  0  0  1  NONCOMMERCIAL             STUDENT, AGE 32, 130
        TIME - 1518                    N65232              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - GREATER ROCKFORD
        DEPARTURE POINT             INTENDED DESTINATION
         ROCKFORD,IL                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       LANDING: TRAFFIC PATTERN-CIRCLING
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      LANDING: TRAFFIC PATTERN-CIRCLING
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS - FOREIGN OBJECT DAMAGE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        REMARKS- PROP SEP & HIT MAIN ROTOR.GLAND NUT,VW PN 111-105305E,FAILED BETWEEN PROP HUB & VW ENG CRANKSHAFT.
```

## Aircraft

- Registration: [N65232](https://openairdocs.org/deregistered/N65232-2012-12-18), registration cancelled 2012-12-18, S/N JCA-27, built 1978 (OpenAirDocs)
- Reported make and model: BENSON B-8M
- Registry model: [Hay B-8M](https://openairdocs.org/model/hay-b-8m) (registry code 1302199) (OpenAirDocs)
- Registry engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501, reciprocating) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed
- Airport: Greater Rockford

## 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 19790722042529A](https://openairdocs.org/incident/19790722042529A), Jul 22, 1979: Amtrbx BENSENB8M, Rockford, IL, Destroyed. Prop hub gland nut came loose. Prop hit rotor. Gyrocopter crashed out of control.

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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