Aircraft	De Havilland Dash-8 100 Series
Airline	Air Canada Jazz
Name	Capt. Marc Deshaies & F/O Jason Matthews
Date	19 Jan 2008
Groundspeed	435 kts
Notes	We got this speed (435kts... we actually got it up to 440 kts, but no good pic to prove it!) on descent from FL230 on a leg between CYQB (Québec City) and CYGR (Îles-de-la-Madeleine) In cruise we got 395kts.