FTW68A0092

NTSB accident investigation · Bell 47G-4 · Leeville, LA · May 17, 1968

Accident · No injuriesClosed
Date
May 17, 1968
Place
Leeville, LA · LEEVILLE, LA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N1331XBell 47G-4
Status
Completed · report July 10, 1968
Report
Brief approved by the director
Case key
111035

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
----------------------------------------------------------------------------------------------------------------------------
3-1396  68/5/17    LEEVILLE,LA         BELL 47G-4          CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 24, 2017
        TIME - 0518                    N1331X              PX-  0  0  2  CTR PASSG-D               TOTAL HOURS, 20 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PHI HELIPORT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           MISCELLANEOUS                                            TAKEOFF: VERTICAL
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: CLUTCH ASSEMBLY
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: FREE WHEEL UNIT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M.
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SLIPPAGE BETWEEN CLUTCH/FREEWHEELING UNIT.24 SPRINGS,3 CUSHIONS BROKE,CAUSED SHEAR SCREWS TO FAIL.

Aircraft

Registration
N1331X
Reported as
Bell 47G-4
Category
Helicopter
Engine
reciprocating
Damage
Substantial damage
Airport
Phi Heliport

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.