NTSB Identification: SEA81DYA27
14 CFR Part 135 Nonscheduled operation of AIRWEST HELICO
Aircraft: AEROSPATLE SA316B, registration: N84850----------------------------------------------------------------------------------------------------------------------------
FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA
F S M/N PURPOSE
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3-2664 81/8/30 NR.DRIGGS,ID AEROSPATLE SA316B CR- 0 0 1 COMMERCIAL COMMERCIAL, AGE 36, 4560
TIME - 1410 N84850 PX- 0 0 0 AIR TAXI-CARGO TOTAL HOURS, 920 IN TYPE,
DAMAGE-SUBSTANTIAL OT- 0 0 0 INSTRUMENT RATED.
DEPARTURE POINT INTENDED DESTINATION
DRIGGS,ID DRIGGS,ID
TYPE OF ACCIDENT PHASE OF OPERATION
PROPELLER/ROTOR FAILURE: TAIL ROTOR IN FLIGHT: HOVERING
COLLISION WITH GROUND/WATER: UNCONTROLLED LANDING: POWER-OFF AUTOROTATIVE LANDING
PROBABLE CAUSE(S)
PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: TAIL ROTOR DRIVE SHAFT ASSEMBLY
MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
REMARKS- TEETH OF SPLINED COUPLING GEAR,PN 3130-567-12-005,WORN EXCESSIVELY.
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