# NTSB OAK74FVG22: Grumman G-164, N7445, Zamora, CA, January 30, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 30, 1974
- Place: Zamora, CA · ZAMORA, CA
- Location: 38.7966° N, 121.8819° W: Placed by OpenAirDocs: center of Zamora, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.7966&lon=-121.8819&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 21, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186977
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK74FVG22
- Page: https://openairdocs.org/ntsb/OAK74FVG22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0330  74/1/30    ZAMORA,CALIF        GRUMMAN G-164       CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 29, 7000
        TIME - 1530                    N7445               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 36 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - MARKS
        DEPARTURE POINT             INTENDED DESTINATION
          ZAMORA,CALIF                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: EN ROUTE TO TREAT CROP
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
           SYSTEMS - ANTI-ICING,DE-ICING SYSTEMS: CARBURETOR DE-ICING SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
        FACTOR(S)
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          CLEAR                                                    UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          HAZE                                                      62
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 6000                       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - GRAIN FIELDS                              TYPE OF CHEMICAL USED - DRY CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - USED                                           CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - INSTALLED                             CRASH BAR - INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT                  ELEVATION-AREA BEING TREATED-FEET -  50
         FIRE AFTER IMPACT
        REMARKS- CARB HEAT DUCT NOT CONNECTED.GND FIRE SMOTHERED BY PLTS JACKET.
```

## Aircraft

- Registration: [N7445](https://openairdocs.org/deregistered/N7445-2013-05-08), registration cancelled 2013-05-08, S/N 951, built 1972 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Marks

## 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 19740130002859A](https://openairdocs.org/incident/19740130002859A), Jan 30, 1974: Gulstm G164A, Zamora, CA, Substantial damage. Carb heat duct not connected. Gnd fire smothered by plts jacket.

## Other investigations on N7445 (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 FTW91DRG03](https://openairdocs.org/ntsb/FTW91DRG03), Jun 8, 1991: Grumman G-164A (N7445), Weslaco, TX, destroyed. Probable cause: FAILURE OF THE PILOT TO MAINTAIN CLEARANCE.

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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