SEA70F0097

NTSB accident investigation · Kaman HUK-1 · Enumclaw, WA · October 4, 1969

Accident · Minor injuriesClosed
Date
October 4, 1969
Place
Enumclaw, WA · ENUMCLAW, WA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N11012Kaman HUK-1
Status
Completed · report June 2, 1970
Report
Brief approved by the director
Case key
154076

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

NTSB brief

NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.

----------------------------------------------------------------------------------------------------------------------------
 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
Reported as
Kaman HUK-1
Category
Helicopter
Engine
reciprocating
Damage
Substantial damage

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Other investigations on N11012 · 1

Matched to the same aircraft by N-number and date.