CL604 corporate captain reported a wake vortex encounter when crossing the path of a B747 at FL230.

Attributes
ACN	1016477
Time
Date	201206
Local Time Of Day	1201-1800
Place
Locale Reference	ZOB.ARTCC
State Reference	OH
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	Direct
Flight Plan	IFR
Aircraft 2
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 11200 Flight Crew Type 1400
Events
Anomaly	Inflight Event / Encounter Wake Vortex Encounter
Miss Distance	Horizontal 5000 Vertical 1000

Narrative:

We had B747 traffic pointed out by ATC and an altitude restriction of 1;000 ft below the B747. I advised aircraft in sight and watched it pass to our right with what I thought was enough horizontal separation that I didn't think we would have a wake encounter. After the B747 passed by; we were given a continued climb clearance. Shortly after beginning our climb we struck the wake of the B747 resulting in a sharp jolt and minor pitch and roll diversions. We advised ATC that we had just struck the wake turbulence of the B747 and the controller responded; 'sorry about that'. I fly enough on the tracks to know to offset around heavy aircraft; but since we were on what turned out to be a converging flight path; which wasn't readily apparent until we flew into the other aircraft's wake; we didn't take any wake turbulence precautions. Fortunately it was a positioning flight and no passengers were on board; as the jolt surely would've have caused them some concern.

Original NASA ASRS Text

Title: CL604 corporate Captain reported a wake vortex encounter when crossing the path of a B747 at FL230.

Narrative: We had B747 traffic pointed out by ATC and an altitude restriction of 1;000 FT below the B747. I advised aircraft in sight and watched it pass to our right with what I thought was enough horizontal separation that I didn't think we would have a wake encounter. After the B747 passed by; we were given a continued climb clearance. Shortly after beginning our climb we struck the wake of the B747 resulting in a sharp jolt and minor pitch and roll diversions. We advised ATC that we had just struck the wake turbulence of the B747 and the Controller responded; 'sorry about that'. I fly enough on the tracks to know to offset around heavy aircraft; but since we were on what turned out to be a converging flight path; which wasn't readily apparent until we flew into the other aircraft's wake; we didn't take any wake turbulence precautions. Fortunately it was a positioning flight and no passengers were on board; as the jolt surely would've have caused them some concern.

Data retrieved from NASA's ASRS site as of July 2013 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.