OAK75AP056

NTSB accident investigation · Hiller Acft FH1100 · Fremont, CA · June 27, 1975

Accident · FatalClosed
Date
June 27, 1975
Place
Fremont, CA · FREMONT, CA
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N439FHiller Acft FH1100
Status
Completed · report January 14, 1976
Report
Brief approved by the director
Safety recommendations
Yes
Case key
79863

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
----------------------------------------------------------------------------------------------------------------------------
3-3654  75/6/27    FREMONT,CA          HILLER ACFT FH1100  CR-  2  0  0  MISCELLANEOUS             COMMERCIAL, AGE 30, 2982
        TIME - 1348                    N439F               PX-  0  0  0  POLICE PATROL             TOTAL HOURS, 1248 IN
                                       DAMAGE-DESTROYED    OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - SKY SAILING
        DEPARTURE POINT             INTENDED DESTINATION
          SAN JOSE,CA                 OAKLAND,CA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      IN FLIGHT: NORMAL CRUISE
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: UNCONTROLLED DESCENT
        PROBABLE CAUSE(S)
           ROTORCRAFT - FLIGHT CONTROL SYSTEMS: CYCLIC PITCH CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
         FIRE AFTER IMPACT
        REMARKS- BOLT CAME LOOSE FRM AFT CYCLIC BELLCRANK ASSY.

Aircraft

Registration
N439F
Reported as
Hiller Acft FH1100
Category
Helicopter
Engine
turbo shaft
Damage
Destroyed
Airport
Sky Sailing

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.