# NTSB MKC68A0049: Bell 47G, N970B, Onawa, IA, February 6, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 6, 1968
- Place: Onawa, IA · ONAWA, IA
- Location: 42.0265° N, 96.0909° W: Placed by OpenAirDocs: center of Onawa, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.0265&lon=-96.0909&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 18, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 111759
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC68A0049
- Page: https://openairdocs.org/ntsb/MKC68A0049

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1612   68/2/6    ONAWA,IOWA          BELL 47G            CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1330                    N970B               PX-  0  0  0  OTHER                     AGE 33, 2309 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            71 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        NAME OF AIRPORT - ONAWA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                STATIC: IDLING ROTORS
           COLLIDED WITH: AUTOMOBILE                                STATIC: IDLING ROTORS
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - LEFT AIRCRAFT UNATTENDED, ENGINE RUNNING
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           WEATHER - UNFAVORABLE WIND CONDITIONS
        FACTOR(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: COLLECTIVE PITCH CONTROL SYSTEM
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      35
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          320                                                       20
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- TIMBER SPOTTING.DEPLANED TO DISCONNECT BOOSTER CABLES MOVE TRUCK.WIND 20K.FRICTION LOCK INOP.
```

## Aircraft

- Registration: [N970B](https://openairdocs.org/deregistered/N970B-2014-11-26), registration cancelled 2014-11-26, S/N 1311 (OpenAirDocs)
- Reported make and model: BELL 47G
- Registry model: [Bell 47G](https://openairdocs.org/model/bell-47g) (registry code 1181002) (OpenAirDocs)
- Registry engine: [Franklin 6V-335 series](https://openairdocs.org/engine/franklin-6v-335-series) (registry code 27039, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Destroyed
- Airport: Onawa

## Other investigations on N970B (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 MIA93FA121](https://openairdocs.org/ntsb/MIA93FA121), May 16, 1993: Bell 47-G (N970B), Parker, FL, destroyed, 2 fatal. Probable cause: the misjudgement of the distance by the nonrated pilot-in-command and subsequent collision with a tree. Contributing to the accident was the lack of helicopter experience of the pilot-in-command.
- [NTSB UNK64X4188](https://openairdocs.org/ntsb/UNK64X4188), Sep 27, 1964: Bell 47G (N970B), Bakersfield, CA, 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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