Aircraft Incident/Accident Report
Naples Municipal Airport

Naples, Florida 33942
Monday, January 24, 1994 12:20 EST

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NTSB Narrative Summary Released at Completion of Accident
THE CERTIFIED FLIGHT INSTRUCTOR DEMONSTRATED A HOVERING AUTOROTATION, THEN HE INSTRUCTED THE STUDENT PILOT TO EXECUTE THE MANUEVER. THE STUDENT PILOT ATTEMPTED THE HOVERING AUTOROTATION BUT OPENED THE THROTTLE INSTEAD OF CLOSING THE THROTTLE AS REQUIRED. THE INSTUCTOR PILOT ATTEMPTED TO REGAIN CONTROL BUT THE STUDENT PILOT DID NOT RELINQUISH CONTROL. THE HELICOPTER PITCHED UP, ROTATED 360 DEGREES TO THE LEFT, STRUCK THE GROUND, THEN ROLLED OVER AND CAME TO REST ON ITS RIGHT SIDE.
NTSB Probable Cause Narrative
THE FLIGHT INSTRUCTOR'S DELAYED REACTION TO TAKE CONTROL OF THE HELICOPTER. CONTRIBUTING FACTORS WERE THE STUDENT PILOT'S IMPROPER USE OF CYCLIC AND COLLECTIVE CONTROLS AND HIS FAILURE TO RELEASE THE FLIGHT CONTROLS TO THE FLIGHT INSTRUCTOR.
Event Information
Type of EventAccident 
Event Date1/24/1994 
Event Day of the WeekMonday 
Time of Event1220 
Event Time ZoneEastern Standard Time 
Event CityNAPLES  
Event StateFLORIDA 
Event Country-- 
Zipcode of the event site33942  
Event Date Year1994 
Event Date Month
MidAir Collision IndicatorNo 
On Ground Collision occurred ?No 
Event Location Latitude  
Event Location Longitude  
Event Location AirportNAPLES MUNICIPAL  
Event Location Nearest Airport IDAPF  
Indicates whether the acc/inc occurred off or on an airportUnknown 
Distance from airport in statute miles
Degrees magnetic from airport
Airport Elevation
Weather Briefing CompletenessNot pertinent 
Investigator's weather sourceUnknown 
Time of the weather observation1220 Eastern Standard Time 
Direction of event from weather observation facility (degrees)
Weather Observation Facility IDAPF  
Elevation of weather observation facility
Distance of event from weather observation facility (units?)
Time Zone of the weather observationEST 
Lighting ConditionsDawn 
Lowest Ceiling Height18000 
Lowest Non-Ceiling Height4500 
Sky/Lowest/Cloud ConditionsScattered 
Sky Condition for Lowest CeilingBroken 
Visibility Runway Visual Range (Feet)
Visibility Runway Visual Value (Statute Miles)
Visibility (Statute Miles) 10 
Air Temperature at event time (in degrees celsius)23 
Dew Point at event time (in degress fahrenheit)13 
Wind Direction (degrees magnetic)80 
Variable Wind IndicatorUnknown 
Wind Speed (knots)
Wind Velocity Indicator Unknown 
Wind Gust IndicatorUnknown 
Wind Gust (knots)
Altimeter Setting at event time (in. Hg) 30 
Density Altitude (feet)
Intensity of PrecipitationUnknown 
METAR weather report -- 
Event Highest InjuryMinor 
On Ground, Fatal Injuries
On Ground, Minor Injuries
On Ground, Serious Injuries
Injury Total Fatal-- 
Injury Total Minor
Injury Total None
Injury Total Serious-- 
Injury Total All
Investigating AgencyNTSB 
NTSB Docket Number (internal use)303 
NTSB Notification Source-- 
NTSB Notification DateJan 24 1994 12:00AM 
NTSB Notification Time1315 
Fiche Number and/or location -used to find docket informationIMAGE 
Date of most recent change to recordDec 6 2000 10:25AM 
User who most recently changed recorddbo  
Basic weather conditionsVisual Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN525BW 
NTSB NumberMIA94LA060  
Missing Aircraft Indicator
Federal Aviation Reg. PartPart 91: General Aviation 
Type of Flight Plan filedCompany VFR 
Flight plan Was Activated?-- 
DamageSubstantial 
Aircraft FireNone 
Aircraft ExplosionNone 
Aircraft Manufacturer's Full NameROBINSON  
Aircraft ModelR-22  
Aircraft Series IdentifierR-22  
Aircraft Serial Number2358  
Certified Max Gross Weight1370 
Aircraft CategoryHelicopter 
Aircraft Registration ClassU.S. Registered/U.S. Soil 
Aircraft is a homebuilt?No 
Flight Crew Seats-- 
Cabin Crew Seats-- 
Passenger Seats-- 
Total number of seats on the aircraft
Number of Engines
Fixed gear or retractable gearFixed 
Aircraft, Type of Last Inspection100 Hour 
Date of Last InspectionNov 10 1993 12:00AM 
Airframe hours since last inspection89 
Airframe Hours189 
ELT InstalledNo 
ELT ActivatedUnknown 
ELT Aided Location of Event SiteUnknown 
ELT Type-- 
Aircraft Owner NameINTRIM HELICOPTERS, INC.  
Aircraft Owner Street Address655 ASTARIAS CIRCLE  
Aircraft Owner CityFT. MYERS  
Aircraft Owner StateFL 
Aircraft Owner Country  
Aircraft Owner Zipcode33919  
Operator is an individual?-- 
Operator NameLONDON HELICOPER INC.  
Operator Same as Owner?No 
Operator Is Doing Business As-- 
Operator Address Same as Owner?No 
Operator Street Address100 AVIATION DRIVE S.  
Operator CityNAPLES  
Operator StateFL 
Operator Country  
Operator Zip code33942  
Operator Code  
Owner has at least one certificateNone 
Other Operator of large aircraft?No 
Certified for Part 133 or 137 OperationUnknown 
Operator Certificate Number-- 
Indicates whether an air carrier operation was scheduled or not-- 
Indicates Domestic or International Flight-- 
Operator carrying Pax/Cargo/Mail-- 
Type of Flying (Per_Bus / Primary)Instructional 
Second Pilot on BoardYes 
Departure Point Same as EventYes 
Departure Airport Code  
Departure City  
Departure State  
Departure Country  
Departure Time1040 
Departure Time ZoneEST 
Destination Same as Local Fltdest & departure same, accident can occur anywhere 
Destination Airport Code  
Destination City  
Destination State  
Destination Country  
Specific Phase of FlightHover 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordJan 2 2001 10:30AM 
User who most recently changed recorddbo  
Since inspection or accident-- 
Event Location Runway Number and Location0  
Runway Length-- 
Runway Width-- 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--