# NTSB OAK71FVA77: Grumman G-164, N704Y, Madera, CA, May 29, 1971

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: May 29, 1971
- Place: Madera, CA · MADERA, CA
- Location: 36.9662° N, 120.0859° W: Placed by OpenAirDocs: center of Madera, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.9662&lon=-120.0859&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report October 20, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 161181
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK71FVA77
- Page: https://openairdocs.org/ntsb/OAK71FVA77

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0196  71/5/29    MADERA,CALIF        GRUMMAN G-164       CR-  1  0  0  COMMERCIAL                COMMERCIAL, AGE 37, 8000
        TIME - 0435                    N704Y               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, UNK/NR IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - MADERA
        DEPARTURE POINT             INTENDED DESTINATION
          MADERA,CALIF                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: WIRES/POLES                               IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - CONTINUED VFR FLIGHT INTO ADVERSE WEATHER CONDITIONS
           WEATHER - FOG
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                     UNKNOWN/NOT REPORTED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          FOG                                                      IFR
        TYPE OF FLIGHT PLAN
          NONE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - DUSTING CROPS
          KIND OF CROP - GRAPES                                    TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -UNKNOWN/NOT REPORTED                 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 -  253
         FIRE AFTER IMPACT
        REMARKS- UN DUST VINEYARD DUE TO FOG-DRG RETURN TO ARPT HIT WIRES APRX 43FT AGL ABT 1/2MI SSW OF ARPT.
```

## Aircraft

- Registration: [N704Y](https://openairdocs.org/deregistered/N704Y-1985-06-04), registration cancelled 1985-06-04, S/N 270 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Madera

## Other investigations on N704Y (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 OAK79FUG65](https://openairdocs.org/ntsb/OAK79FUG65), Jul 24, 1979: Grumman G-164 (N704Y), Trowbridge, CA, destroyed
- [NTSB OAK77DVG09](https://openairdocs.org/ntsb/OAK77DVG09), Nov 13, 1976: Grumman G-164 (N704Y), Live Oak, 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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