It turns out, there are many silver linings to this job. Three weeks later, my wife, Cathy, and I decided to explore some of them with a spontaneous pleasure trip. After spending so many years as a surgeon with a carefully scheduled life, this new Part 135 flying gig, with all its idiosyncrasies, makes spontaneity more possible. Let’s go to Boston to see the kids, we thought. Our granddaughter was in a singing performance with her mom the next day — a perfect use of surprise travel.