Challenger 300
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 120; Flight Crew Total 13500; Flight Crew Type 3000
Deviation - Altitude Excursion From Assigned Altitude; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Returned To Clearance
Environment - Non Weather Related; Procedure
While on approach to Runway 4R at JFK; aircraft encountered wake turbulence from heavy B747 and descended below assigned altitude of 2;000 FT while on autopilot. ILS was fully coupled on the localizer and was joining the glideslope. After occurrence and recovery; the aircraft was again fully stabilized prior to the final approach fix. Aircraft was recovered to assigned altitude without incident; incursion or impact to other aircraft.
[Report narrative contained no additional information.]
CL-300 flight crew reported encountering wake turbulence on approach to JFK in trail of a B747 that caused a deviation from initial approach altitude.