NONE · MBB BK-117A-1 · 1990-01-30 · JANESVILLE, WI, USA
Event
NTSB number
CHI90LA074
Event ID
20001212X22399
Type
Accident
Date
1990-01-30
Location
JANESVILLE, WI, USA
Coordinates
42.679656, -89.009078
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
2
Total aboard
2
Aircraft
Make
MBB
Model
BK-117A-1
Registration
N117M
FAR Part
091
Engines
2
Damage
SUBS
Conditions
Light
DAYL
Weather
VMC
Probable cause
THE PILOT-IN-COMMAND FAILED TO ENSURE THAT THE ENGINE COWLING LATCHES WERE PROPERLY SECURED PRIOR TO DEPARTING ON THE MAINTENANCE TEST FLIGHT; THE COWLING CAME LOOSE DURING FLIGHT, AND CONTACTED THE MAIN ROTOR BLADES BEFORE IT SEPARATED FROM THE HELICOPTER.