SERS · SIKORSKY S-64E · 1991-06-27 · INDEX, WA, USA
Event
NTSB number
SEA91FA143
Event ID
20001212X17377
Type
Accident
Date
1991-06-27
Location
INDEX, WA, USA
Coordinates
47.840507, -121.429901
Injuries
Highest injury
SERS
Fatal
0
Serious
2
Minor
0
Uninjured
0
Total aboard
5
Aircraft
Make
SIKORSKY
Model
S-64E
Registration
N6959R
FAR Part
133
Engines
2
Damage
DEST
Conditions
Light
DAYL
Weather
VMC
Probable cause
THE CONTROL INTERFERENCE BY THE MECHANIC WHEN HE INADVERTENTLY RAISED THE COLLECTIVE PITCH AND THE COPILOT'S FAILURE TO ATTEND THE FLIGHT CONTROLS. FACTORS RELATING TO THE ACCIDENT WERE THE MOTION SICKNESS OF THE MECHANIC, INADEQUATE COLLECTIVE PITCH CONTROL LOCKING MECHANISM UTILIZED BY THE COMPANY, AND ADMINISTRATIVE TASKS THAT DIVERTED THE CO-PILOT'S ATTENTION FROM ATTENDING THE FLIGHT CONTROLS.