# NTSB CHI67A0022: Beech H35, N5488D, Chesterfield, IL, August 10, 1966

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: August 10, 1966
- Place: Chesterfield, IL · CHESTERFIELD, IL
- Location: 39.2566° N, 90.0668° W: Placed by OpenAirDocs: center of Chesterfield, IL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.2566&lon=-90.0668&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report March 8, 1967
- Report: Brief approved by the director
- NTSB case key (mKey): 122397
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI67A0022
- Page: https://openairdocs.org/ntsb/CHI67A0022

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0647  66/8/10    CHESTERFIELD ILL    BEECH H35           CR-  1  0  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0935                    N5488D              PX-  1  0  0  AIR TAXI-PASSG            AGE 29, 2278 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            26 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SPATIAL DISORIENTATION
           PILOT IN COMMAND - EXCEEDED DESIGNED STRESS LIMITS OF AIRCRAFT
           WEATHER - TURBULENCE, ASSOCIATED W/CLOUDS AND/OR THUNDERSTORMS
           AIRFRAME - FLIGHT CONTROL SURFACES: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  400
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          3 MILES OR LESS                                          RAIN SHOWERS
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          FOG                                                      IFR
        TYPE OF FLIGHT PLAN
          IFR
        REMARKS- CLIMBING FROM 5000-7000 , RUDDERVATORS FAILED DUE NEG.OVERLOAD.THROWOVER YOKE IN UNLOCKED POSITION
```

## Aircraft

- Registration: [N5488D](https://openairdocs.org/deregistered/N5488D-1971-12-01), registration cancelled 1971-12-01, S/N D5038 (OpenAirDocs)
- Reported make and model: BEECH H35
- Registry model: [Beech H35](https://openairdocs.org/model/beech-h35) (registry code 1151520) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

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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