Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Mountain View, Wyoming 82939
Sunday, June 24, 2007 13:30 MDT
NTSB Narrative Summary Released at Completion of Accident
The purpose of the flight was to deliver the airplane to a new owner in California. Prior to departure, he checked the weather via computer and had the airplane refueled. The pilot reported "the flight was routine and I was cruising at 8,500 [feet mean sea level] and 80 [miles per hour indicated airspeed] with the landing gear retracted in the floats. Approximately 55 minutes into the flight and over flat terrain with no trees...I encountered an extreme wind gust which caused a severe right yaw, a left bank of approximately 45 degrees, and severe sink...Engine power was full. I could not regain aircraft control or stop the descent. The yaw attitude switched violently from right to left yaw." Subsequently, the airplane impacted terrain and was destroyed by post-impact fire. The airplane came to rest in a open field at an estimated elevation of 7,500 feet. The pilot's calculated density altitude was 11,800 feet, and he reported the wind was from 220 degrees at 15 knots, gusting to 24 knots. The pilot stated that the airplane had no mechanical problems during the flight, and he had accumulated 4 hours in the accident airplane.
NTSB Probable Cause Narrative
The pilot's failure to maintain aircraft control during cruise flight resulting in an impact with terrain. Contributing factors were the wind gust and high density altitude.
Event Information
| Type of Event | Accident |
| Event Date | 6/24/2007 |
| Event Day of the Week | Sunday |
| Time of Event | 1330 |
| Event Time Zone | Mountain Daylight Time |
| Event City | Mountain View |
| Event State | WYOMING |
| Event Country | -- |
| Zipcode of the event site | 82939 |
| Event Date Year | 2007 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 412700N |
| Event Location Longitude | 1103400W |
| 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 | -- |
| Investigator's weather source | Unknown |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 28 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | -- |
| NTSB Docket Number (internal use) | 22024 |
| NTSB Notification Source | FAA-Northwest Mountain Region |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 30 2007 12:18PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N281Z |
| NTSB Number | DEN07CA107 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | -- |
| Aircraft Manufacturer's Full Name | Truitt Peter |
| Aircraft Model | Zenair CH 701SP |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 7-9565 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | Yes |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | -- |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | -- |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | -- |
| ELT Activated | -- |
| ELT Aided Location of Event Site | -- |
| ELT Type | -- |
| Aircraft Owner Name | Chemical Solutions, Inc. |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | -- |
| Aircraft Owner State | -- |
| Aircraft Owner Country | -- |
| Aircraft Owner Zipcode | -- |
| Operator is an individual? | No |
| Operator Name | Aaron W. Kahn |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | San Francisco |
| Operator State | CA |
| Operator Country | USA |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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) | Positioning |
| Second Pilot on Board | -- |
| Departure Point Same as Event | No |
| Departure Airport Code | RKS |
| Departure City | ROCK SPRINGS |
| Departure State | WY |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | -- |
| Destination Same as Local Flt | -- |
| Destination Airport Code | 36U |
| Destination City | HEBER CITY |
| Destination State | UT |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Aug 29 2007 1:27PM |
| User who most recently changed record | NTSB\HAMG |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |