NONE · ROBINSON R-22 · 1993-07-30 · VERDI, NV, USA
Event
NTSB number
LAX93LA308
Event ID
20001211X12967
Type
Accident
Date
1993-07-30
Location
VERDI, NV, USA
Coordinates
39.510414, -119.989784
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
ROBINSON
Model
R-22
Registration
N549SM
FAR Part
091
Engines
1
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
THE INSTRUCTOR'S IMPROPER SUPERVISION OF THE FLIGHT; THE DUAL STUDENT'S IMPROPER IN-FLIGHT DECISION TO FOLLOW ANOTHER HELICOPTER ON DEPARTURE AND THE DUAL STUDENTS DELAY IN CORRECTING THE INADVERTENT YAW. FACTORS RELATED TO THIS ACCIDENT WAS THE INADVERTENT ENCOUNTER WITH THE WAKE TURBULENCE FROM THE PRECEDING DEPARTING HELICOPTER; THE DUAL STUDENT'S IMPROPER USE OF THE THROTTLE AND THE DUAL STUDENTS FAILURE TO MAINTAIN ADEQUATE ROTOR RPM.