N85NX (ex VH-TNX) Imported April 4, aircraft currently at AirFlyte at Barnes Municipal Airport in Westfield MA. Aircraft is a 2008 Hawker 850XP which had been based in Australia since 2008 - flown to USA in January and sold by Gulfstream Aerospace in Texas so it sounds like a trade in on a Gulfstream 150 or 200. Less than 1700 hours on the aircraft, with 1300 landings.
Registered C-GMGB on April 12 2011 to Image Air Charter Ltd. CYYZ

VH-TNX with Tinkler Group Aviation operated by Professional Jet Aviation, Queensland

N85NX with Gulfstream Aerospace (trade-in) Texas
(Current photo and colour scheme)
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N861CE Hawker 800SP (1990) (an 800A upgraded to 800SP) Imported April 14 and registered April 21 to Chartright Toronto as C-GIQF. Aircraft was operated by Coca Coal of Atlanta - but is also ex Canadian operater Agrium Inc. of Calgary. (ex-C-GAGU/C-GAGQ).

photo source
Note; Hawker 800A with Blended Winglets installed become a Hawker 800SP, and a Hawker 800XP with Blended Winglets installed become a Hawker 800-XP2, The Hawker 850XP's were delivered with Blended Winglets.
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Two ex NetJets Citation 560 Ultra's were added to the register April 19th. Currently at Duncan Aviation in Lincoln, NB - unknown their future Canadian home or owner - awaiting details.
N358QS NetJets (1998) Cessna 560 Citation V Ultra - Imported April 19 registered as C-FUBQ to John Hopkinson and & Associates, Calgary.

photo MEL II/Airport-Data.com
N386QS NetJets (1998) Cessna 560 Citation V Ultra - Imported April 19 registered as C-FIBQ to John Hopkinson and & Associates, Calgary.

photo phlairline/Flickr
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N300PY (1997) Cessna 550 Citation II Bravo - Imported April 22 as C-GKUT registered to Flightpath Charter Airways Inc. at YKF (Waterloo ON) (Aircraft arrived as N300PY at YKF on March


crjcapt/FlightAware
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N303CS CitationShares (1997) Cessna 550 Citation Bravo - Imported April 27 as C-GOKO to Jetstream Capital Corporation based Calgary. Aircraft has been at West Star at Grand Junction Colorado since Feb 24.

Paul Kanagie/PHLAirline.com/Flickr
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C-FRKL Cessna Citaton 560 Encore (2003) officially stricken from the register on April 7, which was operated by Irving Air Services. Irving Group of Companies added a Falcon 2000EX last year to their fleet (previously owned by Micheal Schumacher F-1 driver).

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April Bombardier Challenger and Global deliveries;
April 26 5832 C-GDRU Challenger 605 to USA as N40XC
April 26 5837 C-GEWI Challenger 605 to USA
April 29 9405 C-GEZJ Global 5000 to Germany