ASN Wikibase Occurrence # 357279
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| Date: | Friday 7 June 1996 |
| Time: | 11:50 LT |
| Type: |  Cessna 172M |
| Owner/operator: | American Aviation Inc. |
| Registration: | N9594V |
| MSN: | 17264396 |
| Engine model: | Lycoming O-320-E2D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Tooele, UT -
 United States of America
|
| Phase: | Take off |
| Nature: | Training |
| Departure airport: | (KTVY) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.'
Probable Cause: 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.
Accident investigation:
 |
|
Sources:
NTSB SEA96LA115
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Mar-2024 16:08 | ASN Update Bot | Added |
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