G550 first officer reported a wake turbulence encounter at 17;000 feet while ten miles in trail of a...

Attributes
ACN	1408242
Time
Date	201612
Local Time Of Day	0601-1200
Place
Locale Reference	IAD.Airport
State Reference	DC
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Gulfstream V / G500 / G550
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	STAR HYPER7
Flight Plan	IFR
Aircraft 2
Make Model Name	A380
Operating Under FAR Part	Part 129
Flight Phase	Initial Approach
Route In Use	STAR HYPER7
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 6200 Flight Crew Type 300
Events
Anomaly	Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter

Narrative:

[We were] level at 17;000 feet in cruise flight near lrp at 300 KIAS. ATC informed the crew that they were ten miles in trail of an A380. A few minutes earlier; the G550 had been cruising at 320 KIAS when ATC ordered a speed reduction to 300 KIAS to maintain required separation with [the A380]. Crew complied with the speed reduction. [The A380] was visible in the distance out of the cockpit windows. The G550 suddenly entered a 20 to 30 degree uncommanded right roll at 10-20 degrees per second. The left seat PF copilot disengaged the autopilot and corrected roll using left roll input and turned on the seatbelt sign. The G550 returned to level flight with about 200 feet of altitude loss. The captain; as right seat pm; then alerted ATC to the wake turbulence encounter and requested a turn and descent. ATC then provided a vector to the right [to] take the G550 out of a trailing position between [the A380]. No significant G forces were experienced during the upset or recovery and there were no injuries or damage. Management was notified upon landing.

Original NASA ASRS Text

Title: G550 First Officer reported a wake turbulence encounter at 17;000 feet while ten miles in trail of an A380 that resulted in a 20 to 30 degree roll and a loss of 200 feet.

Narrative: [We were] level at 17;000 feet in cruise flight near LRP at 300 KIAS. ATC informed the crew that they were ten miles in trail of an A380. A few minutes earlier; the G550 had been cruising at 320 KIAS when ATC ordered a speed reduction to 300 KIAS to maintain required separation with [the A380]. Crew complied with the speed reduction. [The A380] was visible in the distance out of the cockpit windows. The G550 suddenly entered a 20 to 30 degree uncommanded right roll at 10-20 degrees per second. The left seat PF copilot disengaged the autopilot and corrected roll using left roll input and turned on the seatbelt sign. The G550 returned to level flight with about 200 feet of altitude loss. The Captain; as right seat PM; then alerted ATC to the wake turbulence encounter and requested a turn and descent. ATC then provided a vector to the right [to] take the G550 out of a trailing position between [the A380]. No significant G forces were experienced during the upset or recovery and there were no injuries or damage. Management was notified upon landing.

Data retrieved from NASA's ASRS site 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.

G550 first officer reported a wake turbulence encounter at 17;000 feet while ten miles in trail of an A380 that resulted in a 20 to 30 degree roll and a loss of 200 feet.