# NTSB FTW72DPM26: Bell 47G, N993B, Wynona, OK, April 5, 1972

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 5, 1972
- Place: Wynona, OK · WYNONA, OK
- Location: 36.5458° N, 96.3264° W: Placed by OpenAirDocs: center of Wynona, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.5458&lon=-96.3264&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 29, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 165730
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW72DPM26
- Page: https://openairdocs.org/ntsb/FTW72DPM26

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0732   72/4/5    WYNONA,OKLA         BELL 47G            CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 52, 100
        TIME - 1045                    N993B               PX-  0  0  1  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 45 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - HELI LOADER
        DEPARTURE POINT             INTENDED DESTINATION
          FARMERS FIELD               HELI LOADER
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO SEE AND AVOID OBJECTS OR OBSTRUCTIONS
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -    2                       KIND OF OPERATION - FERRY
          KIND OF CROP - OTHER                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          TANK/HOPPER-LOCATION - SIDES
        REMARKS- ACFT HIT POWER LINES ON FINAL APCH.CRASHED.RESTRICTED ACFT WITH PAX.ALFALFA.
```

## Aircraft

- Registration: [N993B](https://openairdocs.org/aircraft/N993B), registered now, S/N 1448 (OpenAirDocs)
- Reported make and model: BELL 47G
- Registry model: [Bell 47G-2](https://openairdocs.org/model/bell-47g-2) (registry code 1181008) (OpenAirDocs)
- Registry engine: [Lycoming VO-435 series](https://openairdocs.org/engine/lycoming-vo-435-series) (registry code 41525, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Heli Loader

## Other investigations on N993B (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 DFW06CA123](https://openairdocs.org/ntsb/DFW06CA123), May 10, 2006: Bell 47G-2 (N993B), Rosenberg, TX, substantial damage. Probable cause: The pilots encounter with loss of tail rotor effectiveness during an aerial application flight. A contributing factor was the gusty winds.
- [NTSB MIA76FKQ19](https://openairdocs.org/ntsb/MIA76FKQ19), Sep 27, 1975: Bell 47G2 (N993B), Sumner, MS, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.