ASN Wikibase Occurrence # 23015
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| Date: | Monday 7 April 2003 |
| Time: | 13:12 UTC |
| Type: |  Found FBA-2C1 Bush Hawk XP |
| Owner/operator: | Private |
| Registration: | C-GTUP |
| MSN: | 37 |
| Fatalities: | Fatalities: 2 / Occupants: |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Lake Temagami, Ontario -
 Canada
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Lake Temagami, ON |
| Parry Sound, Ontario | |
| Investigating agency: | TSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The aircraft, a Found FBA-2C1 Bush Hawk XP aircraft (registration C-GTUP, serial number 37) was being operated from a cleared ice-strip, approximately 1600 feet long and 50 feet wide, at 46/57.8'N, 080/01.3'W, on the frozen surface of Lake Temagami, 20 kilometres southwest of the town of Temagami, Ontario. On Monday, 07 April 2003, the pilot took off on a visual flight rules (VFR) flight to Parry Sound, Ontario; the take-off heading was approximately 010°M. The aircraft lifted off approximately half-way down the strip, climbed on runway heading to 200-300 feet above the lake surface, then commenced an approximately 30° bank turn nto the left. After the aircraft had turned approximately 120°, the aircraft rolled about 90° to the left, the nose dropped, and the aircraft stalled and entered an incipient spin to the left. The spin stopped after about one turn, then the aircraft rotated briefly in the opposite direction and struck the frozen lake surface in a near-vertical attitude. The accident occurred at approximately 0910 eastern daylight time. The aircraft was destroyed and both occupants were fatally injured.
Findings as to Causes and Contributing Factors
1. There was frost contamination on the upper surface of the wing that was either undetected or incompletely removed, degrading the aerodynamic performance of the wing, resulting in a stall without warning, at higher-than-normal airspeed.
2. The combined effects of illusion of higher than actual airspeed during a low-altitude turn to downwind and reduced longitudinal stability due to frost on the wing negated usual cues that would alert the pilot to the slow speed. As a result, the pilot was likely unaware that the aircraft was slowing down.
3. The aircraft stalled and entered a spin at a height too low to permit recovery.
Accident investigation:
 |
|
Sources:
TSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 23-Oct-2023 15:18 | harro | Updated |
Corrections or additions? ... Edit this accident description
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