One of the pillars of instrument training is trusting your equipment while also verifying the data it presents. That’s fine when there’s a third datapoint to break the tie. But what do you do when your only two navigation sources show a slight discrepancy—but it’s at the end of an approach where every foot matters?
Bruce Williams
Bruce Williams is the owner of BruceAir, LLC, an aviation consulting, training, and pilot-services company based in Seattle, WA. He has been a pilot since the early 1970s, and he is a certified flight instructor and FAASTeam representative in the Seattle area. Today, he focuses on training in technically advanced aircraft (TAA), the Beechcraft Bonanza series, and stall/spin/upset recovery courses in an Extra 300L aerobatic aircraft. He also instructs at Galvin Flying Services at Boeing Field. During a 15-year career at Microsoft, he worked on six versions of Microsoft Flight Simulator. In the 1980s, he edited the Western Flyer (now the General Aviation News). He is also the author of two books about using PC-based simulation to complement flight training, plus many features on a variety of topics for aviation-focused periodicals. Bruce publishes an aviation blog at BruceAir.
