Incident at Nordegg, AB

Summary

1997-07-11: After landing the helicopter with four people on board, and while the engine was still operating, the pilot felt a vibration. The rotor speed was increased and the vibration diminished somewhat, however as weight was reduced on the skids, the vibration increased dramatically. The pilot then lowered the collective and shut the engine down. After shut-down, the rotor brake was applied and a clunk sound was heard while the rotor blades were still turning. Inspection showed that both pitch link rods were broken at the top of the bottom bolt and the upper part of the scissor was also broken. TSB have been advised and are investigating the incident. UPDATE Investigation showed that the bracket on the upper swash plate had failed. The failed component has been sent to the TSB Laboratory in Ottawa for analysis.

Details


CADORS Number 1997C0435
Occurrence Type Incident
Reported By Transport Canada
Occurred At 1997-07-09 - 18:00
Day or Night?
Fatalities 0
Injuries
Aerodrome ID
Aerodrome Name
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Nordegg, AB
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By Transport Canada
Categories System/component failure or malfunction [non-powerplant]
Events



Aircraft Details (1 aircraft)

Type Helicopter
 Silhouette image of Helicopter
Canadian Registration FDOE | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Owner GOVERNMENT OF CANADA, DEPARTMENT OF TRANSPORT
Operator State
Make  Silhouette image of BELL
BELL
Model 206B
Year Built 1969
Engine Type Turbo shaft
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number
Flight Rule
CARS Subpart
Phase of Flight Parked
Damage Unknown
Fatalities 0
Injuries 0
Events Flight control systems (ailerons, rudder, rotors, flaps, main, tail)

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