# NTSB SEA70F0097: Kaman HUK-1, N11012, Enumclaw, WA, October 4, 1969

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: October 4, 1969
- Place: Enumclaw, WA · ENUMCLAW, WA
- Location: 47.2022° N, 121.9890° W: Placed by OpenAirDocs: center of Enumclaw, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.2022&lon=-121.9890&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report June 2, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 154076
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70F0097
- Page: https://openairdocs.org/ntsb/SEA70F0097

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4675   69/10/4   ENUMCLAW,WASH       KAMAN HUK-1         CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 39, 2840
        TIME - 1345                    N11012              PX-  0  0  0  AERIAL APPLICATION        TOTAL HOURS, 66 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          ENUMCLAW,WASH               ENUMCLAW,WASH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: PROCEDURE TURNAROUND
           COLLIDED WITH: TREES                                     LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: OTHER
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
           TERRAIN - HIGH OBSTRUCTIONS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - JETTISONED LOAD
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  LATERAL CONTROL PROBLEM
                                  PROP/ENGINE VIBRATION
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - FERTILIZING (DUST)
          KIND OF CROP - FOREST-TREES                              TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - SLING LOADED                      TERRAIN-TYPE -MOUNTAINOUS
          ELEVATION-AREA BEING TREATED-FEET -  2000                SWATH RUN-HOW FLOWN - WIND CALM
          PROCEDURE TURNAROUND - FIRST 1/3 TURN
        REMARKS- INFLT FAILURE OF BLADE RETAINER BRACKETS.
```

## Aircraft

- Registration: [N11012](https://openairdocs.org/deregistered/N11012-2009-06-26), registration cancelled 2009-06-26, S/N 146309, built 1958 (OpenAirDocs)
- Reported make and model: KAMAN HUK-1
- Registry model: [Kaman HUK-1](https://openairdocs.org/model/kaman-huk-1) (registry code 4800805) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Helicopter
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N11012 (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 SEA73FYC24](https://openairdocs.org/ntsb/SEA73FYC24), Apr 11, 1973: Kaman K-600 (N11012), Pilot Rock, OR, 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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