# NTSB UNK64X0792: Grummam G164, N491Y, Boca Raton, FL, March 2, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 2, 1964
- Place: Boca Raton, FL · BOCA RATON, FL
- Location: 26.3708° N, 80.1026° W: Placed by OpenAirDocs: center of Boca Raton, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=26.3708&lon=-80.1026&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 27, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 185345
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X0792
- Page: https://openairdocs.org/ntsb/UNK64X0792

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0539   64/3/2    BOCA RATON FLA      GRUMMAM G164        CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 23, 5100
        TIME - 0645                    N491Y               PX-  0  0  0  ASSOC CROP CTL ACTIVITY   TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - AYRES
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 4000                       KIND OF OPERATION - DUSTING CROPS
          KIND OF CROP - UNKNOWN/NOT REPORTED                      TYPE OF CHEMICAL USED - DRY CHEMICAL-TOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - USED                                           CRASH HELMET - NOT AVAILABLE
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - FORWARD OF PILOT
         FIRE AFTER IMPACT
```

## Aircraft

- Registration: [N491Y](https://openairdocs.org/deregistered/N491Y-1976-09-07), registration cancelled 1976-09-07, S/N 135 (OpenAirDocs)
- Reported make and model: GRUMMAM G164
- Registry model: [Grumman G-164](https://openairdocs.org/model/grumman-g-164) (registry code 3952702) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Ayres

## Other investigations on N491Y (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 DEN76FTM31](https://openairdocs.org/ntsb/DEN76FTM31), Jun 2, 1976: Grumman G-164 (N491Y), Morgan, UT, destroyed

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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