Individually Owned: 150,657
Corporate Owned: 137,281
Rapid City Regional Airport
Aircraft Accident/Incident Report
Rapid City, South Dakota 57701
Friday, February 9, 1990 11:14 MST
NTSB Narrative Summary Released at Completion of Accident
WITNESSES RPRTD THAT SHORTLY AFTER LIFT-OFF, THE ACFT ENTERED AN UNUSUALLY STEEP, NOSE HIGH ATTITUDE, WHILE STILL AT LOW AIRSPEED. ONE WITNESS (AN ATP PLT) RPRTD THE ACFT ATTAINED AN ALT OF APRX 75 TO 100 FT AND APPEARED TO SLOW DOWN AND ENTER A VMC ROLL, THEN IT CRASHED. IMPACT OCCURRED IN AN INVERTED, NOSE DOWN ATTITUDE, LEFT OF THE RWY. AN INVESTIGATION REVEALED THAT A COUPLING SHAFT (PN 865888-3) HAD FAILED IN THE LEFT ENG & THE LEFT PROP HAD FEATHERED. A METALLURICAL EXAM OF THE COUPLING SHOWED EVIDENCE OF FATIGUE.
NTSB Probable Cause Narrative
FAILURE OF THE PILOT TO MAINTAIN ADEQUATE AIRSPEED (VMC), WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL. A FACTOR RELATED TO THE ACCIDENT WAS: FATIGUE FAILURE OF A COUPLING SHAFT IN THE #1 ENGINE, WHICH RESULTED IN LOSS OF POWER IN THAT ENGINE.
Event Information
| Type of Event | Accident |
| Event Date | 2/9/1990 |
| Event Day of the Week | Friday |
| Time of Event | 1114 |
| Event Time Zone | Mountain Standard Time |
| Event City | RAPID CITY |
| Event State | SOUTH DAKOTA |
| Event Country | -- |
| Zipcode of the event site | 57701 |
| Event Date Year | 1990 |
| Event Date Month | 2 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | RAPID CITY REGIONAL |
| Event Location Nearest Airport ID | RAP |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 3202 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1116 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 90 |
| Weather Observation Facility ID | RAP |
| Elevation of weather observation facility | 3202 |
| Distance of event from weather observation facility (units?) | 5 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 7000 |
| Lowest Non-Ceiling Height | 4000 |
| 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) | 35 |
| Air Temperature at event time (in degrees celsius) | 0 |
| Dew Point at event time (in degress fahrenheit) | -8 |
| Wind Direction (degrees magnetic) | 170 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 14 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 2155 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 1 |
| Injury Total Minor | 2 |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 4 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 579 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Feb 9 1990 12:00AM |
| NTSB Notification Time | 1155 |
| Fiche Number and/or location -used to find docket information | 41541 |
| Date of most recent change to record | Dec 12 2000 4:46PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N64MD |
| NTSB Number | DEN90FA055 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | VFR/IFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | MITSUBISHI |
| Aircraft Model | MU-2B-60 |
| Aircraft Series Identifier | MU-2B-60 |
| Aircraft Serial Number | 747SA |
| Certified Max Gross Weight | 11575 |
| 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 | 7 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Feb 4 1990 12:00AM |
| Airframe hours since last inspection | 14 |
| Airframe Hours | 4382 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | CHANCELLOR AIRCRAFT LEASING |
| Aircraft Owner Street Address | 135 E. RENO AVE. SUITE F-7 |
| Aircraft Owner City | LAS VEGAS |
| Aircraft Owner State | NV |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 89119 |
| Operator is an individual? | -- |
| Operator Name | AEROMEDICAL SERVICES INTL |
| Operator Same as Owner? | No |
| 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 | VTTA |
| 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 | International |
| Operator carrying Pax/Cargo/Mail | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | RAP |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1113 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CYWG |
| Destination City | MANITOBA,CANADA |
| Destination State | OF |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| 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 | 14 |
| Runway Length | 8701 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |