An hs-125 captain reported encountering severe wake turbulence on arrival to iad at 15;000 ft which ...

Attributes
ACN	978822
Time
Date	201111
Local Time Of Day	0601-1200
Place
Locale Reference	NHK.Airport
State Reference	MD
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	BAe 125 Series 800
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Vectors STAR HYPER THREE
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 7500 Flight Crew Type 4600
Events
Anomaly	Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter

Narrative:

While level at 15;000 ft on vectors with pautuxent app on the hyper 3 near binns intersection; we experienced what I believe was severe wake turbulence. The aircraft rolled approximately 60 degrees to the left. We were [at] 250 KTS and it took full right aileron to roll wings level. The aircraft then rolled back to the left same amount two more times taking full right aileron to correct. I descended out of 15;000 ft and recovered the aircraft at 14;200. ATC was notified and the controller stated there were no aircraft within 20 miles. We had one passenger and he was not injured. I did not exceed 200 KTS the rest of the 20 minute flight and made a normal landing in iad. We had the aircraft fully inspected by our maintenance technicians who were flown to dulles to conduct the maintenance. The only damage to the aircraft was six bent vortex generators.

Original NASA ASRS Text

Title: An HS-125 Captain reported encountering severe wake turbulence on arrival to IAD at 15;000 FT which resulted in 60-degree rolls both directions and loss of altitude. ATC stated the nearest aircraft was 20 miles away.

Narrative: While level at 15;000 FT on vectors with Pautuxent APP on the Hyper 3 near BINNS Intersection; we experienced what I believe was severe wake turbulence. The aircraft rolled approximately 60 degrees to the left. We were [at] 250 KTS and it took full right aileron to roll wings level. The aircraft then rolled back to the left same amount two more times taking full right aileron to correct. I descended out of 15;000 FT and recovered the aircraft at 14;200. ATC was notified and the controller stated there were no aircraft within 20 miles. We had one passenger and he was not injured. I did not exceed 200 KTS the rest of the 20 minute flight and made a normal landing in IAD. We had the aircraft fully inspected by our Maintenance technicians who were flown to Dulles to conduct the maintenance. The only damage to the aircraft was six bent vortex generators.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

An hs-125 captain reported encountering severe wake turbulence on arrival to iad at 15;000 ft which resulted in 60-degree rolls both directions and loss of altitude. ATC stated the nearest aircraft was 20 miles away.