Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Lee Vining, California 93541
Monday, April 1, 1991 21:00 PST
NTSB Narrative Summary Released at Completion of Accident
THE CERTIFICATED PRIVATE PILOT WAS ON A CROSS COUNTRY FLIGHT THAT BEGAN AT ABOUT 0830 HOURS AND WAS PLANNED TO COVER ABOUT 1,300 NAUTICAL MILES. THE PILOT DEPARTED HIS LAST FUEL STOP AT ABOUT 2000 HOURS WHERE A WITNESS REPORTED THAT THE PILOT APPEARED FATIGUED. THE ROUTE OF FLIGHT WAS OVER HIGH MOUNTAINOUS TERRAIN THAT HAD A MINIMUM FLIGHT ELEVATION OF 13,500 FEET. AN EMERGENCY LOCATOR TRANSMITTER SIGNAL WAS RECEIVED AT 0024 HOURS, LOCATED 105 MILES WEST OF THE LAST DEPARTURE AIRPORT. THE AIRPLANE WAS LOCATED BY SEARCH PERSONNEL AT 11,000 FEET AND HAD IMPACTED A MOUNTAIN SIDE IN A REMOTE AREA OF DEEP SNOW. AT THE ACCIDENT LOCATION, THE AIRPLANE WAS ABOUT 1,000 FEET BELOW THE MOUNTAIN RIDGE LINE. THE TIME AND LOCATION OF THE ACCIDENT PLACED THE AIRPLANE IN AN AREA THAT DID NOT HAVE ANY GROUND OR MOON ILLUMINATION.
NTSB Probable Cause Narrative
THE FAILURE OF THE PILOT TO MAINTAIN ADEQUATE ALTITUDE TO CLEAR MOUNTAINOUS TERRAIN. CONTRIBUTING TO THE ACCIDENT WAS PILOT FATIGUE DUE TO A LENGTHY CROSS COUNTRY FLIGHT.
Event Information
| Type of Event | Accident |
| Event Date | 4/1/1991 |
| Event Day of the Week | Monday |
| Time of Event | 2100 |
| Event Time Zone | Pacific Standard Time |
| Event City | LEE VINING |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 93541 |
| Event Date Year | 1991 |
| 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 | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2046 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 220 |
| Weather Observation Facility ID | MCE |
| Elevation of weather observation facility | 153 |
| Distance of event from weather observation facility (units?) | 70 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 20 |
| Air Temperature at event time (in degrees celsius) | 11 |
| Dew Point at event time (in degress fahrenheit) | 8 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Calm |
| 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 | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1620 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 45274 |
| Date of most recent change to record | Dec 12 2000 9:44AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1941Y |
| NTSB Number | LAX91LA154 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | MOONEY |
| Aircraft Model | M-20E |
| Aircraft Series Identifier | M-20E |
| Aircraft Serial Number | 248 |
| Certified Max Gross Weight | 2575 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jan 2 2000 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Yes |
| ELT Type | -- |
| Aircraft Owner Name | ALAN D. MC DONALD |
| Aircraft Owner Street Address | 316 SYCAMORE |
| Aircraft Owner City | MANTECA |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 95336 |
| Operator is an individual? | -- |
| Operator Name | ALAN D. MC DONALD |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 316 SYCAMORE |
| Operator City | MANTECA |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 95336 |
| Operator Code | |
| Owner has at least one certificate | None |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | THP |
| Departure City | TONOPAH |
| Departure State | NV |
| Departure Country | |
| Departure Time | 2000 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SCK |
| Destination City | STOCKTON |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| 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 | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |