# NTSB LAX76DUJ29: Bell 47G-5, N4099G, Chandler, AZ, September 8, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 8, 1975
- Place: Chandler, AZ · CHANDLER, AZ
- Location: 33.3062° N, 111.8413° W: Placed by OpenAirDocs: center of Chandler, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.3062&lon=-111.8413&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 15, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 151024
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX76DUJ29
- Page: https://openairdocs.org/ntsb/LAX76DUJ29

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3339   75/9/8    CHANDLER,AZ         BELL 47G-5          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 27, 3635
        TIME - 0845                    N4099G              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 800 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          CHANDLER,AZ                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            IN FLIGHT: SWATH RUN
           NOSE OVER/DOWN                                           LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
           MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -  800                       KIND OF OPERATION - SPRAYING CROPS
          KIND OF CROP - COTTON                                    TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - 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 -  1200                SWATH RUN-HOW FLOWN - DOWNWIND
        REMARKS- RAPID INTENSE VIB,LNDD IN DAMP SOFT PLOWED FLD. SKID TOES DUG IN,M/R BLADE HIT T/R DRIVE & BOOM.
```

## Aircraft

- Registration: [N4099G](https://openairdocs.org/deregistered/N4099G-2017-04-04), registration cancelled 2017-04-04, S/N 7909, built 1968 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5A](https://openairdocs.org/model/bell-47g-5a) (registry code 1181034) (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

## 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 19750908029459A](https://openairdocs.org/incident/19750908029459A), Sep 8, 1975: Bell 47G5, Chandler, AZ, Substantial damage. Rapid intense vib,lndd in damp soft plowed fld. Skid toes dug in,m/r blade hit t/r drive & boom.

## Other investigations on N4099G (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 LAX88DUG07](https://openairdocs.org/ntsb/LAX88DUG07), Sep 18, 1988: Bell 47G-5A (N4099G), Perris, CA, substantial damage
- [NTSB LAX84LA424](https://openairdocs.org/ntsb/LAX84LA424), Aug 1, 1984: Bell 47G-5A (N4099G), Winterhaven, 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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