Aera 660 Coupled Instrument approaches
Discovered a clever way to fly a coupled autopilot approach with the 660 a couple days ago. Granted the 660 is not a panel mounted IFR approved GPS but it's good to know the capabilities of your systems and how to use them. Someday you may have to use some of those 'superior piloting skills' to get yourself out of a situation you or some nasty unpredicted weather put you into. Or perhaps your primary legal IFR instrumentation is not working or the airport ground based navigation system is inop.
My Aera 660 is hard wired to the Trio autopilot via an RS 232 wire. With an airport in the active flight plan flying a coupled approach (VOR, LOC, RNAV or anything in that airport's database) is fairly easy and tracks beautifully (lateral track only).
The manual (section 3.5) discusses the specifics how to select and execute the approach by yourself or getting vectors to final by ATC. Granted this is only lateral guidance but it intercepts the course and flies a very precise track to the runway. I tried this the other day VFR and had the IFR chart on Garmin Pilot pulled up and it tracked exactly down the course line right to the runway. Using altitude preselect on your autopilot you can also descend from the FAF at a specific VVI to the minimum descent altitude (MDA) and drive in to the missed approach point (MAP).
Ok for all the instrument purists out there> NO this is not an approved IFR approach procedure. Just a way to get on the ground if your only other option is running out of gas above the clouds. My RV is instrument qualified and I do have legal instrumentation onboard. Not saying to go out and file IFR with just a 660, just something to have in your bag of tricks- just in case. Practice in good weather so you know how to use it when you need it and are running out of options.
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Last edited by olyolson : 12-05-2016 at 11:35 AM.
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