Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Kailua/Kona, Hawaii 96745
Saturday, April 20, 1985 9:20 HST
NTSB Narrative Summary Released at Completion of Accident
A REVENUE SIGHT-SEEING HELICOPTER FLIGHT OPERATING UNDER 14 CFR 91 COLLIDED WITH LAVA ROCK WHILE ATTEMPTING A FORCED LANDING ON THE SUMMIT OF MUANA LOA VOLCANO AFTER A PARTIAL LOSS OF POWER. THE PILOT STATED THAT WHILE IN A SHALLOW DOWNWIND TURN AT APRX 200 FT AGL & AN AIRSPEED OF ABOUT 40 MPH, THE HELICOPTER BEGAN TO SETTLE WHILE HE CONTINUED TO ADD POWER. THE AIRCRAFT WAS TOO LOW TO INCREASE AIRSPEED. AFTER HITTING THE LAVA ROCK, THE HELICOPTER SKIDDED 12 FEET, TURNED TO THE RIGHT, & ROLLED OVER TO THE LEFT. BOTH THE FLT CONTROLS & THE ENG FUNCTIONED TO TOUCHDOWN. TESTS DISCLOSED NO DISCREPANCIES IN THE FUEL SYSTEM. THE HEIGHT-VELOCITY DIAGRAM HAS ONLY BEEN TESTED TO A DENSITY ALT OF 10,000 FT. THE ACCIDENT OCCURRED AT A DENSITY ALT OF 15,500 FT. IT DOES NOT APPLY ABOVE A DENSITY ALT OF 5,400 FT AT A GROSS WEIGHT OF 3,600 LBS, THE ESTIMATED WEIGHT OF THE HELICOPTER AT THE ACCIDENT SITE.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 4/20/1985 |
| Event Day of the Week | Saturday |
| Time of Event | 920 |
| Event Time Zone | Hawaii Standard Time |
| Event City | KAILUA/KONA |
| Event State | HAWAII |
| Event Country | -- |
| Zipcode of the event site | 96745 |
| Event Date Year | 1985 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 13250 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Pilot |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 15000 |
| Sky/Lowest/Cloud Conditions | Thin Overcast |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 15 |
| Air Temperature at event time (in degrees celsius) | 7 |
| Dew Point at event time (in degress fahrenheit) | -18 |
| Wind Direction (degrees magnetic) | 60 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | 15500 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 7 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 7 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2341 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 20 1985 12:00AM |
| NTSB Notification Time | 1730 |
| Fiche Number and/or location -used to find docket information | 29724 |
| Date of most recent change to record | Dec 18 2002 11:28AM |
| User who most recently changed record | NTSB\GIUV |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N478KA |
| NTSB Number | LAX85FA217 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BELL |
| Aircraft Model | 206-L1 |
| Aircraft Series Identifier | 206-L1 |
| Aircraft Serial Number | 45179 |
| Certified Max Gross Weight | 4150 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | U.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 | 7 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Apr 16 1985 12:00AM |
| Airframe hours since last inspection | 19 |
| Airframe Hours | 7267 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | KANAI HELIOCPTER'S INC. |
| Aircraft Owner Street Address | P.O. BOX 3270 |
| Aircraft Owner City | LIHUE KAUAI |
| Aircraft Owner State | HI |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 96766 |
| Operator is an individual? | -- |
| Operator Name | |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | |
| Operator City | |
| Operator State | |
| Operator Country | |
| Operator Zip code | |
| Operator Code | |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| 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) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | NONE |
| Departure City | KAILUA/KONA |
| Departure State | HI |
| Departure Country | |
| Departure Time | 830 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 22 2001 3:51PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | 0 |
| Runway Width | 0 |
| Sight Seeing flight | Yes |
| Air Medical Flight | No |
| Medical Flight | -- |