Laurence Burrows

A member of the Philip Greenspun's Homepage community since December 18, 2006

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December 18, 2006, on Avidyne versus Garmin G1000 glass cockpits:
Some points I'd like to make. 1. NDB/ADF. In the "rest of the world" (i.e. not USA) the majority of terminal & en-route navaids are still the humble NDB. RAIM outages often coincide with passenger's "gotta get there by whenever" so RNAV(GNSS) cannot be always relied on. In Australia, many routes are defined from NDB to NDB and often include ded-reckoning sectors -- even tracking between NDBs you may be out of range of either station. Several of these sectors are over desert or the Pacific Ocean, and may correspond with RAIM outages for at least part of the time (Murphy's Law). So, the key requirement here is integrating ADF receiver(s) display / pointer with the HSI. Can any of the Chelton / Avidyne / Garmin units do this? And, when NDB is the sole available aid, two working units are required unless its a private flight. As far as I'm aware, only the Sandel SN3500 & SN4500 display ADF data on an HSI. 2. DME is required for many ILS approaches. Unless the chart is notate...