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Features August 2016 Issue

Technology Gotchas

The ubiquitous Garmin GNS 4xx/5xx-series of navigators, designed about two decades ago, are showing their age with some limitations, especially if they haven’t been updated with WAAS.

Technology Gotchas

We love our navigators. They enable navigation previously the purview of sophisticated airliner flight management systems. But they’re not perfect, especially if they’re not new.

First we got an e-mail from a reader concerned that Garmin was removing airports with runways under 4000 feet from their worldwide database. Next, a reader related a situation where he’d been cleared direct to a fix that wasn’t in his Garmin GNS 430, but it showed up when he loaded an RNAV arrival. These produced some internal discussions and one of our staff related a story from a friend of his who’d busted a stepdown fix altitude because the stepdown fix wasn’t depicted on the approach in his Bendix-King KLN-94.

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