Individually Owned: 150,657
Corporate Owned: 137,281
Bolinder-Tooele Valley Airport
Aircraft Accident/Incident Report
Tooele, Utah 84074
Friday, June 7, 1996 10:50 MDT
NTSB Narrative Summary Released at Completion of Accident
The pilot stated that just after takeoff, the airspeed began decreasing, the stall warning horn sounded, and the airplane started sinking despite attempts at corrective action. The airplane impacted the ground beyond the departure end of the runway. Density altitude was 6,385 feet. A videotape, filmed by a rear-seat passenger, showed that the aircraft reached a pitch attitude of up to 24 degrees nose-high after takeoff. It also recorded a sound, resembling the stall warning horn, 42 seconds after start of takeoff roll (about 18 to 19 seconds after becoming airborne), and it recorded no significant change in engine noise pitch during the event. The airplane's electrical flap switch demonstrated improper mechanical operation 'due to normal wear' during postaccident functional testing. Investigation revealed that the pilot took off uphill to the south (average runway slope was 0.81 percent). The FAA's regional airport master record and the Utah state aeronautical chart wrongly indicated that the runway sloped uphill to the north, rather than to the south. The Airport/Facility Directory (A/FD) gave no runway slope data for the airport; the A/FD legend stated that the runway slope would be shown 'only when it is 0.3 percent or more.'
NTSB Probable Cause Narrative
failure of the flight instructor (CFI) to ensure that adequate airspeed was maintained during initial climb after lift-off, which resulted in an inadvertent stall/mush. High density altitude was a related factor.
Event Information
| Type of Event | Accident |
| Event Date | 6/7/1996 |
| Event Day of the Week | Friday |
| Time of Event | 1050 |
| Event Time Zone | Mountain Daylight Time |
| Event City | TOOELE |
| Event State | UTAH |
| Event Country | -- |
| Zipcode of the event site | 84074 |
| Event Date Year | 1996 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | BOLINDER-TOOELE VALLEY |
| Event Location Nearest Airport ID | TVY |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | 160 |
| Airport Elevation | 4316 |
| Weather Briefing Completeness | Partial - limited by pilot |
| Investigator's weather source | Pilot |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| 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) | 20 |
| Air Temperature at event time (in degrees celsius) | 27 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 3 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1357 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jun 7 1996 12:00AM |
| NTSB Notification Time | 1115 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 10:05AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9594V |
| NTSB Number | SEA96LA115 |
| 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 | Cessna |
| Aircraft Model | 172M |
| Aircraft Series Identifier | 172M |
| Aircraft Serial Number | 17264396 |
| Certified Max Gross Weight | 2300 |
| 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 | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Feb 29 1996 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | CARL ALLRED |
| Aircraft Owner Street Address | 1270 W. 5050 S. |
| Aircraft Owner City | TAYLORSVILLE |
| Aircraft Owner State | UT |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 84123 |
| Operator is an individual? | -- |
| Operator Name | AMERICAN AVIATION INC. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 337 N. 2370 W. #231 |
| Operator City | SALT LAKE CITY |
| Operator State | UT |
| Operator Country | |
| Operator Zip code | 84116 |
| 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) | Instructional |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | TVY |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1044 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| 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 | 16 |
| Runway Length | 5500 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |