# NTSB FTW77FPM13: Bell 47G, N16657, Copan, OK, June 15, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 15, 1977
- Place: Copan, OK · COPAN, OK
- Location: 36.9005° N, 95.9253° W: Placed by OpenAirDocs: center of Copan, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.9005&lon=-95.9253&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 2, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 147505
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW77FPM13
- Page: https://openairdocs.org/ntsb/FTW77FPM13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1355  77/6/15    COPAN,OK            BELL 47G            CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 48, 564
        TIME - 1855                    N16657              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 482 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          COPAN,OK                    LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: PROCEDURE TURNAROUND
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  403                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - BEANS                                     TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          ELEVATION-AREA BEING TREATED-FEET -  750                 SWATH RUN-HOW FLOWN - UPWIND
          PROCEDURE TURNAROUND - ENTRY TO PROCEDURE TURN
```

## Aircraft

- Registration: [N16657](https://openairdocs.org/deregistered/N16657-2012-08-10), registration cancelled 2012-08-10, S/N K7124 (OpenAirDocs)
- Reported make and model: BELL 47G
- Registry model: [Bell-K-Copter 47G](https://openairdocs.org/model/bell-k-copter-47g) (registry code 1181065) (OpenAirDocs)
- Registry engine: [Franklin 6V4 series](https://openairdocs.org/engine/franklin-6v4-series) (registry code 27033, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## 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 19770615017569A](https://openairdocs.org/incident/19770615017569A), Jun 15, 1977: Bell 47G, Copan, OK, Substantial damage

## Other investigations on N16657 (3)

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 FTW80FPM14](https://openairdocs.org/ntsb/FTW80FPM14), Jul 16, 1980: Bell 47G (N16657), Calvin, OK, destroyed, 1 fatal
- [NTSB FTW70FPD05](https://openairdocs.org/ntsb/FTW70FPD05), Mar 5, 1970: Bell 47G (N16657), Fort Worth, TX, substantial damage
- [NTSB FTW69F0491](https://openairdocs.org/ntsb/FTW69F0491), May 2, 1969: Bell 47G (N16657), Fort Worth, TX, 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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