ASN Wikibase Occurrence # 210457
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| Date: | Saturday 5 May 2018 |
| Time: | 10:02 |
| Type: | Belair Raven |
| Owner/operator: | Private |
| Registration: | C-FNKZ |
| MSN: | 12351 |
| Year of manufacture: | 2012 |
| Total airframe hrs: | 61 hours |
| Engine model: | Honda 3.5 Litre |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Sault Ste. Marie Municipal Airport, MI (SSM/KANJ) -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Sault Ste Marie, MI (ANJ) |
| Sault Ste Marie, MI (ANJ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot and pilot-rated passenger were departing on a local flight in the experimental, amateur-built airplane in gusting crosswind conditions. Witnesses saw the airplane take off and enter a nose-high attitude. About 100 ft above ground level, the airplane began turning right and transitioned to a nose-low spin until ground impact. Examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. The airplane was not equipped with any stall warning devices.
The witness reports and damage to the airplane were consistent with the pilot failing to maintain sufficient airspeed during a steep takeoff climb, which resulted in the airplane exceeding its critical angle of attack and a subsequent aerodynamic stall. A flight instructor at the airport reported that, when departing the accident runway with westerly winds present, he would often notice turbulence and swirling air. He attributed this effect to the tall trees located about 100 yards west of the runway. Although autopsies revealed that both pilots were at risk for a sudden cardiac event, the circumstances of the accident are consistent with a loss of control rather than a sudden incapacitation, and it is unlikely that either pilot's cardiac condition contributed to the accident.
Probable Cause: The pilot's failure to maintain adequate airspeed during takeoff in gusty crosswind conditions, which resulted in the airplane exceeding its critical angle of attack and an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB
Location
Media:
Plane crashes in Sault Ste. Marie Michigan. Not good @stinaz27 @SooEveningNews pic.twitter.com/k4c4eI9ENu
— Mike Stouffer (@TheSixthLens) 5 mei 2018
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-May-2018 16:23 | harro | Added |
| 05-May-2018 18:57 | Anon. | Updated [Registration, Source, Embed code, Damage] |
| 05-May-2018 19:06 | harro | Updated [Time, Aircraft type, Cn, Total fatalities, Total occupants, Location, Source] |
| 06-Jul-2019 19:37 | ASN Update Bot | Updated [Time, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ] |
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