Individually Owned: 150,657
Corporate Owned: 137,281
Jackson Hole Airport
Aircraft Accident/Incident Report
Jackson, Wyoming 83001
Sunday, July 6, 1997 10:05 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that on the day of the accident, he was up before daylight to get a weather briefing for the continuation of his flight. The pilot stated that he did not have breakfast and was 'painfully hungry' before departure. The departure airport field elevation is 4,245 feet msl. After takeoff, the pilot climbed to 12,500 feet, and when he tried to open the valve for the oxygen, he reported that he could not turn it because his hand was too weak. The pilot continued the flight and reported that he was confused about turning points, altitudes, distances, and that he felt 'woosy.' The pilot reported that as he approached his destination, he had difficulty determining pattern altitude and that he was having trouble staying awake. The pilot stated that while on final approach, the airplane was low, and with great difficulty, he pushed the throttle forward. As the aircraft crossed over the end of the runway, the pilot did not feel that he was doing anything to control the airplane and that he felt that he was half asleep. The airplane landed hard and fast with the throttle still open. The airplane turned off to the left and exited the side of the runway. The nose gear collapsed and the airplane nosed over. The pilot also reported that shortly after admission to the hospital at Jackson he was told that his blood oxygen level was still down at only 60%.
NTSB Probable Cause Narrative
The pilot's failure to maintain directional control. Hypoxia and hypoglycemia were physical impairment factors.
Event Information
| Type of Event | Accident |
| Event Date | 7/6/1997 |
| Event Day of the Week | Sunday |
| Time of Event | 1005 |
| Event Time Zone | Mountain Daylight Time |
| Event City | JACKSON |
| Event State | WYOMING |
| Event Country | -- |
| Zipcode of the event site | 83001 |
| Event Date Year | 1997 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | JACKSON HOLE |
| Event Location Nearest Airport ID | JAC |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 6445 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 956 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | JAC |
| Elevation of weather observation facility | 6445 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | MDT |
| Lighting Conditions | Day |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | 190 |
| 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) | 30 |
| Density Altitude (feet) | 8000 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1029 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jul 6 1997 12:00AM |
| NTSB Notification Time | 1015 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 12:26PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N4552D |
| NTSB Number | SEA97LA159 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Beech |
| Aircraft Model | G35 |
| Aircraft Series Identifier | G35 |
| Aircraft Serial Number | D-4703 |
| Certified Max Gross Weight | 2975 |
| 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 | -- |
| Airframe hours since last inspection | 50 |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | JOHN M. MILLER |
| Aircraft Owner Street Address | 41 KINGWOOD PARK |
| Aircraft Owner City | POUGHKEEPSIE |
| Aircraft Owner State | NY |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 12601 |
| 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 | 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 | WRL |
| Departure City | WORLAND |
| Departure State | WY |
| Departure Country | |
| Departure Time | 0 |
| Departure Time Zone | |
| Destination Same as Local Flt | crash at destination city |
| 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 | Jan 2 2001 10:34AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 18 |
| Runway Length | 6299 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |