Behind the scenes - Instrument Proficiency Check. Here's a behind the scenes look at a preparing for an Instrument Proficiency Check, where our instructor Sash puts student Al's skills to the test under simulated IFR conditions. At Phil Unicomb Aviation we offer Instrument Rating Training, Instrument Proficiency Checks, Multi Engine Training and Flight Reviews in both Beechcraft Baron and Duchess aircraft. We have multiple instructors and in-house examiners to suit your schedule. If you're ready