# NTSB CHI75AC059: Beech G35, N4594D, Rock Falls, IL, February 23, 1975

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: February 23, 1975
- Place: Rock Falls, IL · ROCK FALLS, IL
- Location: 41.7721° N, 89.6942° W: Placed by OpenAirDocs: center of Rock Falls, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.7721&lon=-89.6942&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report July 15, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148056
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI75AC059
- Page: https://openairdocs.org/ntsb/CHI75AC059

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1648  75/2/23    ROCK FALLS,IL       BEECH G35           CR-  1  0  0  NONCOMMERCIAL             PRIVATE, AGE 45, 565
        TIME - 2025                    N4594D              PX-  1  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 271 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - WHITESIDE COUNTY
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          ROCK FALLS,IL               RETURN                       BLOOMINGTON,IL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
        FACTOR(S)
           WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.
           WEATHER - LOW CEILING
           WEATHER - SNOW
           WEATHER - UNFAVORABLE WIND CONDITIONS
           MISCELLANEOUS ACTS,CONDITIONS - ICE-WINDSHIELD
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        MISSING AIRCRAFT - LATER RECOVERED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OBSCURATION                                               300
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          1/2 MILE OR LESS                                         SNOW
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          BLOWING SNOW                                              33
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
           30                                                       23
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          IFR                                                      IFR
        REMARKS- NOT DEICER EQPD.RCVRD 2/24/75.
```

## Aircraft

- Registration: [N4594D](https://openairdocs.org/deregistered/N4594D-1975-04-17), registration cancelled 1975-04-17, S/N D-4758, built 1956 (OpenAirDocs)
- Reported make and model: BEECH G35
- Registry model: [Beech G35](https://openairdocs.org/model/beech-g35) (registry code 1151516) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Whiteside County

## 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 19750223031369A](https://openairdocs.org/incident/19750223031369A), Feb 23, 1975: Beech G35, Rock Falls, IL, Substantial damage, 1 fatal. Not deicer eqpd. Rcvrd 2/24/75.

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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