Date:	Thursday 15 December 2011
Time:	09:54
Type:	Cirrus SR22 G2
Owner/operator:	Private
Registration:	N7850P
MSN:	1351
Year of manufacture:	2005
Engine model:	Continental IO-550-N
Fatalities:	Fatalities: 1 / Occupants: 2
Aircraft damage:	Substantial
Category:	Accident
Location:	Near Scottsdale Airport (KSDL), Scottsdale, AZ -   United States of America
Phase:	Landing
Nature:	Executive
Departure airport:	Show Low, AZ (SOW)
Destination airport:	Scottsdale, AZ (SDL)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
A review of radar data revealed that the single-engine Cirrus airplane entered the left downwind leg of the traffic pattern for runway 3 as a Gulfstream twin-engine corporate jet was 5 miles to the west for landing. The tower controller instructed the Cirrus pilot to extend his downwind leg to follow the Gulfstream and then instructed him to report when he had the Gulfstream in sight. The Cirrus pilot made his base turn towards the final approach course before reporting the Gulfstream in sight, which resulted in the Cirrus being in very close proximity to the Gulfstream. The Cirrus pilot had the discretion to turn from the extended downwind to the base leg prior to the controller advising him to do so; however, when he made this decision it then became his responsibility to maintain safe separation from the Gulfstream.

After several traffic advisories from the controller to the accident pilot, the pilot finally reported the Gulfstream in sight, at which point the Gulfstream was about 0.11 nautical miles ahead of--and 200 to 300 feet higher than--the Cirrus on final to runway 3. The controller then radioed the Cirrus pilot to stand by for a possible go-around and the pilot replied that he was standing by. The controller instructed the Cirrus pilot to start a climb and go around. Three seconds later, an unidentified pilot radioed the controller that an airplane on final had just gone down; no further communications were received from the Cirrus pilot. About 7 seconds before the accident, the Cirrus was at an altitude of 1,400 feet above ground level. The Gulfstream had passed that location about 30 seconds earlier and 150 feet higher than the Cirrus. The upset and loss of control most likely occurred as a direct result of an encounter with the wake turbulence generated by the Gulfstream while the Cirrus was in trail and on final approach to the runway. An onboard recording device revealed that at 0954 the Cirrus experienced an upset, rolling rapidly from 35 degrees left-wing-down to over 77 degrees left-wing-down, before rapidly rolling to 25 degrees right-wing-down. At this time, the airplane's rate of descent was in excess of 3,000 feet per minute.
Probable Cause: The pilot's failure to maintain adequate separation behind a corporate jet, which resulted in an encounter with wake turbulence and a subsequent loss of control.

NTSB
FAA register: [LINK NOT WORKING ANYMORE:http://www.wdtimes.com/news/national/article_77ff53bc-634b-5a15-bd30-b749b9df2937.html]
http://archive.azcentral.com/12news/news/articles/2011/12/15/20111215plane-crashes-phoenix-neighborhood-near-scottsdale-airport.html?from=new-cookie
http://www.airnav.com/airport/KSOW
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=7850P&x=0&y=0
https://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20111215X31833&key=1

https://flightaware.com/photos/view/124456-c4c94fa1921eaf1482df83ed1f3102d3e915113c/aircrafttype/SR22
[LINK NOT WORKING ANYMORE:http://www.wdtimes.com/news/national/article_77ff53bc-634b-5a15-bd30-b749b9df2937.html]
http://archive.azcentral.com/12news/news/articles/2011/12/15/20111215plane-crashes-phoenix-neighborhood-near-scottsdale-airport.html?from=new-cookie
http://www.airnav.com/airport/KSOW
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=7850P&x=0&y=0
https://www.ntsb.gov/aviationquery/brief.aspx?ev_id=20111215X31833&key=1

https://flightaware.com/photos/view/124456-c4c94fa1921eaf1482df83ed1f3102d3e915113c/aircrafttype/SR22

Date/time	Contributor	Updates
15-Dec-2011 13:01	gerard57	Added
15-Dec-2011 13:39	Anon.	Updated [Registration, Cn]
15-Dec-2011 22:22	Geno	Updated [Location, Departure airport, Destination airport, Source]
16-Dec-2011 13:31	Alpine Flight	Updated [Time, Aircraft type, Location, Departure airport, Destination airport]
23-Dec-2011 11:17	Geno	Updated [Time, Source, Narrative]
21-Dec-2016 19:26	ASN Update Bot	Updated [Time, Damage, Category, Investigating agency]
27-Nov-2017 17:38	ASN Update Bot	Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]