SEA80FYE10

NTSB accident investigation · Hughes 369D · Mt.Vernon, WA · December 22, 1979

Accident · Minor injuriesClosed
Date
December 22, 1979
Place
Mt.Vernon, WA · MT.VERNON, WA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N8303FHughes 369D
Status
Completed · report February 22, 1980
Report
Brief approved by the director
FAA report
19791222036899A
Case key
132647

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
----------------------------------------------------------------------------------------------------------------------------
3-3298  79/12/22 NR.MT.VERNON,WA       HUGHES 369D         CR-  0  0  1  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 1345                    N8303F              PX-  0  0  0  CORP/EXEC                 41, 5040 TOTAL HOURS, 402
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         MT.VERNON,WA                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: MAIN ROTOR                      TAKEOFF: VERTICAL
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: SPRAG SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - HIGH OBSTRUCTIONS
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- TKOF FROM SMALL CLEARING. SPRAG CLUTCH(PN 369A5364)FAILED.

Aircraft

Registration
N8303F
Reported as
Hughes 369D
Category
Helicopter
Engine
turbo shaft
Damage
Substantial damage

FAA reports on this event · 1

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