# NTSB UNK64X0250: Bell 47D1, N4253A, Perrine, FL, January 15, 1964

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: January 15, 1964
- Place: Perrine, FL · PERRINE, FL
- Location: 25.6051° N, 80.3537° W: Placed by OpenAirDocs: center of Perrine, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.6051&lon=-80.3537&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report December 22, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 116693
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X0250
- Page: https://openairdocs.org/ntsb/UNK64X0250

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0015  64/1/15    PERRINE FLA         BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 54, 1618
        TIME - 0700                    N4253A              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 800 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                LANDING: POWER-ON LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
           MISCELLANEOUS ACTS,CONDITIONS - PILOT FATIGUE
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL -   70                       KIND OF OPERATION - ANTI-FROST OPERATIONS
          KIND OF CROP - FRUIT ORCHARDS                            PILOT' S SEAT BELT -FASTENED-PROPERLY
          GLOVES - NOT USED                                        GOGGLES - NOT USED
          CRASH HELMET - AVAILABLE-NOT USED                        COCKPIT CRASHPAD - NOT INSTALLED
          TANK/HOPPER-LOCATION - SIDES                             TERRAIN-TYPE -LEVEL,FLAT
          SWATH RUN-HOW FLOWN - UNKNOWN/NOT REPORTED
```

## Aircraft

- Registration: N4253A (not matched to a registry record)
- Reported make and model: BELL 47D1
- Category: Helicopter
- Engines: reciprocating
- Damage: 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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