I've also heard STARS resorting to the use of fixed wing aircraft if the heli-pilot deems that the weather will be unfavorable for a longer trip, such as for a flight to Cranbrook.
Now, I don't want to totally rule it out as a possibility, but, to my understanding, I don't think these fixed wing aircraft have anything to do with this STAR-6 we're hearing as I've read that STARS and the fixed wing aircraft exist somewhat separately, even though STARS utilizes them, as I've never heard traffic being passed back and forth yet from a fixed wing, and if their using provincial, depending on the situation I don't think they'd likely be landing a fixed wing on the hwy at a scene, and finally their website states this:
"There are 11 dedicated air ambulance bases in Alberta -- two helicopter bases and nine fixed wing aircraft bases. STARS operates the two helicopter bases"