# NTSB CHI79DEG13: Bell 47G-2, N4423, Piqua, OH, May 23, 1979

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 23, 1979
- Place: Piqua, OH · PIQUA, OH
- Location: 40.1447° N, 84.2433° W: Placed by OpenAirDocs: center of Piqua, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1447&lon=-84.2433&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report July 25, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135884
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI79DEG13
- Page: https://openairdocs.org/ntsb/CHI79DEG13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1752  79/5/23  NR.PIQUA,OH           BELL 47G-2          CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1815                    N4423               PX-  0  0  0  AERIAL APPLICATION        AGE 23, 1529 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            368 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         PIQUA,OH                     LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: CONTROLLED                  IN FLIGHT: SWATH RUN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISJUDGED ALTITUDE AND CLEARANCE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -   35                       KIND OF OPERATION - TEST
          TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC         GLOVES - NOT USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE-NOT USED
          TERRAIN-TYPE -LEVEL,FLAT                                 ELEVATION-AREA BEING TREATED-FEET -  1000
          SWATH RUN-HOW FLOWN - CROSSWIND                          PROCEDURE TURNAROUND - THIRD 1/3 TURN
        REMARKS- PILOT WAS TESTING SPRAY EQUIPMENT USING WATER.
```

## Aircraft

- Registration: [N4423](https://openairdocs.org/aircraft/N4423), registered now, S/N 295, built 1967 (OpenAirDocs)
- Reported make and model: BELL 47G-2
- 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: Piqua

## 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 19790523011479A](https://openairdocs.org/incident/19790523011479A), May 23, 1979: Bell 47G2, Piqua, OH, Substantial damage. Pilot claims loss of translational lift,settling with power and retreating blade stall during low level operation.

## Other investigations on N4423 (1)

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 FTW96LA008](https://openairdocs.org/ntsb/FTW96LA008), Oct 5, 1995: Bell 47-G2 (N4423), Freer, TX, substantial damage. Probable cause: the pilot's failure to maintain clearance from the power lines due to his improper takeoff technique. A factor was the helicopter induced blowing dust which impaired the pilot's visibility.

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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