# NTSB LAX79DUJ18: Bell 47G-5, N7907S, Yuma, AZ, November 16, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 16, 1978
- Place: Yuma, AZ · YUMA, AZ
- Location: 32.7253° N, 114.6244° W: Placed by OpenAirDocs: center of Yuma, AZ, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.7253&lon=-114.6244&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 6, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 138137
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX79DUJ18
- Page: https://openairdocs.org/ntsb/LAX79DUJ18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4313  78/11/16 NR.YUMA,AZ            BELL 47G-5          CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1700                    N7907S              PX-  0  0  0  AERIAL APPLICATION        AGE 46, 11974 TOTAL
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            HOURS, 905 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         YUMA,AZ                      LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: PROCEDURE TURNAROUND
           HARD LANDING                                             LANDING: ROLL-ON/RUN-ON
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           ROTORCRAFT - ROTOR ASSEMBLIES: MAIN ROTOR HEAD ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER ALIGNMENT/ADJUSTMENT
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  DIRECTIONAL CONTROL PROBLEM
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 1000                       KIND OF OPERATION - DUSTING CROPS
          KIND OF CROP - LETTUCE                                   TYPE OF CHEMICAL USED - LIQUID CHEMICAL-TOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 GLOVES - NOT USED
          GOGGLES - 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 -  200                 SWATH RUN-HOW FLOWN - CROSSWIND
          PROCEDURE TURNAROUND - FIRST 1/3 TURN
        REMARKS- STABILIZER BAR DAMPER CLAMP PN 47-140-134-1 FAILED.
```

## Aircraft

- Registration: [N7907S](https://openairdocs.org/deregistered/N7907S-2012-07-19), registration cancelled 2012-07-19, S/N 7845, built 1966 (OpenAirDocs)
- Reported make and model: BELL 47G-5
- Registry model: [Bell 47G-5](https://openairdocs.org/model/bell-47g-5) (registry code 1181032) (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

## Other investigations on N7907S (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 LAX86FUM01](https://openairdocs.org/ntsb/LAX86FUM01), Oct 22, 1985: Bell 47 G-5 (N7907S), Yuma, AZ, destroyed
- [NTSB LAX80FUJ83](https://openairdocs.org/ntsb/LAX80FUJ83), Jul 25, 1980: Bell 47G-5 (N7907S), Sommerton, AZ, substantial damage
- [NTSB DEN68D0026](https://openairdocs.org/ntsb/DEN68D0026-110294), Jun 14, 1968: Bell 47G-5 (N7907S), Ogden, UT, 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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