OAK78FVM46

NTSB accident investigation · Bell 47D1 · Castroville, CA · September 17, 1978

Accident · No injuriesClosed
Date
September 17, 1978
Place
Castroville, CA · CASTROVILLE, CA
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N78900Bell 47D1
Status
Completed · report October 25, 1978
Report
Brief approved by the director
FAA report
19780917028729A
Case key
139649

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
----------------------------------------------------------------------------------------------------------------------------
3-2724  78/9/17  NR.CASTROVILLE,CA     BELL 47D1           CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0900                    N78900              PX-  0  0  0  ASSOC CROP CTL ACTIVITY   AGE 48, 4000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            3000 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         CASTROVILLE,CA               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: VERTICAL
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           MISCELLANEOUS - UNDETERMINED
        FACTOR(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADE RETENTION MECHANISM
           MISCELLANEOUS ACTS,CONDITIONS - LOOSE,PART/FITTING
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
                                  PITCH CONTROL PROBLEM
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - UNKNOWN/NOT REPORTED       KIND OF OPERATION - FERRY
          PILOT' S SEAT BELT -FASTENED-PROPERLY
        REMARKS- COLLECTIVE PITCH BECAME UNCONTROLLABLE.MAIN ROTOR SHAFT AND RETAINING NUT SCUFFED AND OUT OF ROUND

Aircraft

Registration
N78900
Reported as
Bell 47D1
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.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N78900 · 3

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