Individually Owned: 150,657
Corporate Owned: 137,281
Scottsdale Airport
Aircraft Accident/Incident Report
Phoenix, Arizona 85254
Thursday, December 15, 2011 9:54 MST
NTSB Narrative Summary Released at Completion of Accident
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.
NTSB Probable Cause Narrative
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.
Event Information
| Type of Event | Accident |
| Event Date | 12/15/2011 |
| Event Day of the Week | Thursday |
| Time of Event | 954 |
| Event Time Zone | Mountain Standard Time |
| Event City | Phoenix |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85254 |
| Event Date Year | 2011 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 333630N |
| Event Location Longitude | 1115548W |
| Event Location Airport | Scottsdale |
| Event Location Nearest Airport ID | SDL |
| 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 | 210 |
| Airport Elevation | 1510 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 953 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 35 |
| Weather Observation Facility ID | SDL |
| Elevation of weather observation facility | 1510 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 8 |
| Dew Point at event time (in degress fahrenheit) | 4 |
| Wind Direction (degrees magnetic) | 250 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.18 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 32190 |
| NTSB Notification Source | FAA AWP ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Dec 13 2013 11:14AM |
| User who most recently changed record | stam |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7850P |
| NTSB Number | WPR12FA067 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CIRRUS DESIGN CORP. |
| Aircraft Model | SR22 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 1351 |
| Certified Max Gross Weight | 3400 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| 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 | Annual |
| Date of Last Inspection | -- |
| 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 | FRANK M SMITH & ASSOCIATES INC |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | PINETOP |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 85935-1368 |
| Operator is an individual? | No |
| Operator Name | FRANK M SMITH & ASSOCIATES INC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | PINETOP |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 85935-1368 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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) | Business |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | SOW |
| Departure City | Show Low |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 913 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SDL |
| Destination City | Scottsdale |
| Destination State | AZ |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Dec 13 2013 11:15AM |
| User who most recently changed record | stam |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 03 |
| Runway Length | 8249 |
| Runway Width | 100 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |