Individually Owned: 150,657
Corporate Owned: 137,281
Yampa Valley Airport
Aircraft Accident/Incident Report
Hayden, Colorado 81639
Sunday, September 12, 1982 13:28 MDT
NTSB Narrative Summary Released at Completion of Accident
A MAINT SUPERVISOR & 2 PLTS NOTED THAT THE L ENG DID NOT RESPOND NORMALLY WHILE BEING STARTED. AFT STARTING, THE PLT TAXIED TO RWY 10 FOR AN IFR DEPARTURE. SINCE THE TWY DID NOT EXTEND TO THE END OF THE RWY, THE PLT OF ANOTHER ACFT WAITED ON THE TWY, JUST SHORT OF THE RWY, APRX 2967 FT FROM THE END. HE OBSD SMOKE COMING FROM THE L ENG OF THE MU-2 & REPORTED THIS INFO ON THE UNICOM FREQ. HE REPORTED THAT THE MU-2 CONTD & ROTATED FOR TKOF APRX 200 TO 250 YDS EAST OF HIS PSN. RPRTDLY, THE ACFT CLIMBED TO APRX 300-400 FT AFL, THEN TURNED LEFT TWD HIGHER TERRAIN. AFTER TURNING, IT ENTER WHAT 2 WITNESSES DESCRIBED AS A VMC ROLL, THEN CRASHED & BURNED. AN EXAM OF THE AIRFRAME REVEALED NO PREIMPACT MECHANICAL FAILURES. A TEARDOWN OF THE L ENG REVEALED THAT A TURBINE BEARING, PN 3101092-1, HAD BEEN MISALIGNED & SUBSEQUENTLY BEGAN TO FAIL, DAMAGING THE 2ND & 3RD STAGES OF THE TURBINE SECTION. THE ARPT ELEV WAS 6597 FT. THE COMPUTED TKOF ROLL WAS 1620 FT & THE COMPUTED ACCELERATE-STOP DISTANCE WAS 3100 FT. THE LNDG GEAR & SEL, FND IN DWN PSN.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 9/12/1982 |
| Event Day of the Week | Sunday |
| Time of Event | 1328 |
| Event Time Zone | Mountain Daylight Time |
| Event City | HAYDEN |
| Event State | COLORADO |
| Event Country | -- |
| Zipcode of the event site | 81639 |
| Event Date Year | 1982 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | YAMPA VALLEY |
| Event Location Nearest Airport ID | HDN |
| 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 | 0 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Unknown |
| Time of the weather observation | 1250 |
| Direction of event from weather observation facility (degrees) | 150 |
| Weather Observation Facility ID | EGE |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 53 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 5000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 40 |
| Air Temperature at event time (in degrees celsius) | 57 |
| Dew Point at event time (in degress fahrenheit) | 0 |
| Wind Direction (degrees magnetic) | 170 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 0 |
| 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 | 6 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 6 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 3393 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | |
| Date of most recent change to record | Oct 31 2002 4:04PM |
| User who most recently changed record | NTSB\ZUZL |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N66U |
| NTSB Number | DEN82AA191 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | MITSUBISHI |
| Aircraft Model | MU-2B-25 |
| Aircraft Series Identifier | MU-2B-25 |
| Aircraft Serial Number | 309 |
| Certified Max Gross Weight | 8930 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | Unknown |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 9 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | 92 |
| Airframe Hours | 1493 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | PAT GRIFFIN COMPANY |
| Aircraft Owner Street Address | 303 W. PROSPECT |
| Aircraft Owner City | FORT COLLINS |
| Aircraft Owner State | CO |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 80522 |
| Operator is an individual? | -- |
| Operator Name | PAT GRIFFIN COMPANY |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 303 W. PROSPECT |
| Operator City | FORT COLLINS |
| Operator State | CO |
| Operator Country | |
| Operator Zip code | 80522 |
| 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) | Business |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | 3V5 |
| Departure City | FORT COLLINS |
| Departure State | CO |
| Departure Country | |
| Departure Time | 830 |
| Departure Time Zone | |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | 3V5 |
| Destination City | FORT COLLINS |
| Destination State | CO |
| Destination Country | |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Sep 18 2002 4:50PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 10 |
| Runway Length | 6999 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |