Falcon 900
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
ATC Issue All Types; Deviation - Track / Heading All Types; Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Wake Vortex Encounter
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Regained Aircraft Control; Flight Crew Took Evasive Action
Environment - Non Weather Related; Procedure
We were descending on the FISEL 7 Arrival. Instructed to descend to 15;000 feet after FATHR waypoint. We experienced moderate wake turbulence. I contacted ATC and asked them what kind of aircraft is flying in front of us; they told us it's an A350. They said would we like to offset 10 degrees. I asked the Captain; then suggested we take the offset but he said we should be ok. ATC said the Airbus is 10 miles ahead of us. We could see the aircraft and it didn't look 10 miles away. We again experienced moderate wake turbulence; both times autopilot disengaged and the aircraft snapped to the right. It felt like a 90 degree snap bank. At this times I told ATC we encountered the wake turbulence again and need to offset at least 10 degrees. From that point on they took us off the arrival and gave us vectors. We were still following the aircraft on the ILS 10 L; and tried to stay a little above the glide slope since we were cleared for the visual. ATC did not mention caution wake turbulence on our initial descent. The only time we received the caution wake turbulence was after we were cleared to intercept the localizer and then cleared for the visual; and by Tower when we were cleared to land. Needs to be larger separation between heavy and corporate jets. Also pilots need to be informed of what kind of aircraft they are following.
Reporter expressed the strong opinion that separation between corporate and air carrier aircraft should be increased.
Falcon 900 First Officer reported encountering wake turbulence that rolled the aircraft to a 90 degree bank while descending on the FISEL7 Arrival into FLL in trail of an A350.