Individually Owned: 150,657
Corporate Owned: 137,281
Hilo International Airport
Aircraft Accident/Incident Report
Hilo, Hawaii 96720
Sunday, November 10, 1991 8:50 HST
NTSB Narrative Summary Released at Completion of Accident
ABT 45 MI FM LNDG, THE L ENG RPM BGN TO FLUCTUATE, THEN AT ABT 15 MI FM LNDO, IT LOST POWER ALTOGETHER. THE PLT SAID THE ACFT WOULD NOT MAINT ALTITUDE. UNABLE TO RCH THE RWY, HE DITCHED THE ACFT IN HILO BAY ABT 1/4 MI FM SHORE & 1.5 MI FM THE ARPT. AFTER RETRIEVAL, THE ACFT & L ENG WERE EXAMINED. THE ACCESSORY GEAR DRIVE SHAFT WAS FND TO HAVE FAILED IN TORSIONAL OVERLOAD. ON THE INSIDE OF THE CASE, AN AREA OF GOUGING & ABRASION WAS FND DRCTLY IN FNT OF THE STARTER GEAR. (THE LEFT MAG, FUEL PUMP & PROP GOVERNOR WERE DRIVEN BY THE ACCESSORY DRIVE GEAR.) DEEP IMPRESSIONS WERE NOTED ON ABT 70% OF THE GEAR TEETH, WITH MTRL DISPLACEMENT & GOUGING EVIDENT. THERE WAS EVIDENCE THAT THE COLLECTOR DRIVE FLOATING GEAR MAY HAVE MOVED FORWARD & HAD CONTACTED THE ENG CASE. ALSO, THERE WAS EVIDENCE OF MECHANICAL INTERFERENCE WITHIN THE ACCESSORY DRIVE GEAR SYS. THE ACFT GROSS WT AT THE TIME OF THE ACDNT WAS ABOUT 9108 LBS.
NTSB Probable Cause Narrative
THE AIRCRAFT'S LACK OF SINGLE ENGINE PERFORMANCE TO MAINTAIN ALTITUDE AFTER THE ENGINE LOST POWER. FACTORS RELATED TO THE ACCIDENT WERE: DISPLACEMENT/MECHANICAL INTERFERENCE WITHIN THE ACCESSORY DRIVE GEAR SYSTEM OF THE LEFT ENGINE, FAILURE OF THE LEFT ENGINE ACCESSORY DRIVE GEAR SHAFT, AND THE FAA'S INADEQUATE CERTIFICATION/APPROVAL OF THE OPERATOR, IN ORDER TO ASSURE COMPLIANCE WITH 14 CFR 135 CONCERNING THE ENGINE-OUT CAPABILITY.
Event Information
| Type of Event | Accident |
| Event Date | 11/10/1991 |
| Event Day of the Week | Sunday |
| Time of Event | 850 |
| Event Time Zone | Hawaii Standard Time |
| Event City | HILO |
| Event State | HAWAII |
| Event Country | -- |
| Zipcode of the event site | 96720 |
| Event Date Year | 1991 |
| Event Date Month | 11 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | HILO INTERNATIONAL |
| Event Location Nearest Airport ID | ITO |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | 270 |
| Airport Elevation | 38 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 844 Hawaii Standard Time |
| Direction of event from weather observation facility (degrees) | 270 |
| Weather Observation Facility ID | ITO |
| Elevation of weather observation facility | 38 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | HST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 28000 |
| Lowest Non-Ceiling Height | 2300 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Broken |
| 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) | 26 |
| Dew Point at event time (in degress fahrenheit) | 21 |
| Wind Direction (degrees magnetic) | 260 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 11 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1946 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Nov 11 1991 12:00AM |
| NTSB Notification Time | 1115 |
| Fiche Number and/or location -used to find docket information | 45879 |
| Date of most recent change to record | Dec 12 2000 10:51AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4193 |
| NTSB Number | LAX92LA042 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | VFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | D18S |
| Aircraft Series Identifier | D18S |
| Aircraft Serial Number | A980 |
| Certified Max Gross Weight | 10200 |
| Aircraft Category | Airplane |
| 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 | 11 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Oct 28 1991 12:00AM |
| Airframe hours since last inspection | 35 |
| Airframe Hours | 19936 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | TOMY INTERNATIONAL |
| Aircraft Owner Street Address | 100 IOLANA PLACE |
| Aircraft Owner City | HONOLULU |
| Aircraft Owner State | HI |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 96819 |
| Operator is an individual? | -- |
| Operator Name | TOMY INTERNATIONAL |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 100 IOLANA PLACE |
| Operator City | HONOLULU |
| Operator State | HI |
| Operator Country | |
| Operator Zip code | 96819 |
| Operator Code | TVWA |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | HNL |
| Departure City | HONOLULU |
| Departure State | HI |
| Departure Country | |
| Departure Time | 700 |
| Departure Time Zone | HST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ITO |
| Destination City | HILO |
| Destination State | HI |
| Destination Country | |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 8 |
| Runway Length | 9800 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |