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#11
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"EDR" wrote in message ... In article , Tom S. wrote: Any good references on "Flying the RMI"? Back in the late 1980's one of the aviation magazines had a series of articles on flying with different navaid indicators. I will have to see if I still have them. Thanks, it might he |
#12
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"Peter" wrote in message ... "Tom S." wrote When I quit flying some years back, RMI's were expensive and found generally only found in the "heavy metal". Now they seems quite common? What particular advantages do they offer? I can't find any good articles (other than marketing) on them. I was wondering if I should add one to a bird I plan to buy? Thanks A dual-needle (ADF+VOR) RMI is a brilliant instrument. For NDB approaches, DME arcs. But then nearly all people here are in the USA, and in the USA many people say a GPS replaces an ADF anyway so that's moot... Indeed it does. In many ways, it replaces VOR's and especially RNAV's of "yesterday". However, I'd like to dump the ADF indicator and replace it with an RMI; that, to my thinking, would give me redundancy and even a better cross-check. (Update: the offer is in for the F33A I'm looking to buy. If it's accepted, delivery should be just in time for Christmas...after some specific training here locally.) |
#13
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"Tom S." wrote in message ...
was under the (mistaken??) assumption that they made NDB approaches easier. Yes, an RMI does make an NDB approach easier because an RMI shows easily and intuitively your bearing to an NDB. It works very similar to an ADF with a slaved rotating compass card. This means that applying wind correction on an NDB approach is much easier with an RMI. That said, I would not recommend investing money in an RMI right now. Not only can you get TWO electronic RMIs in a Sandel EHSI, but you can even set up a portable Garmin 195 or 295 or 196 GPS with a bearing pointer that functions as an RMI. If you have an IFR-legal ADF in your airplane, it is perfectly legal to fly an NDB approach while you supplement your ADF navigation with RMI information from your portable GPS -- just be sure your ADF remains your primary navigational source. -- Richard Kaplan, CFII www.flyimc.com |
#14
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"Richard Kaplan" wrote in message m... "Tom S." wrote in message ... was under the (mistaken??) assumption that they made NDB approaches easier. Yes, an RMI does make an NDB approach easier because an RMI shows easily and intuitively your bearing to an NDB. It works very similar to an ADF with a slaved rotating compass card. This means that applying wind correction on an NDB approach is much easier with an RMI. That said, I would not recommend investing money in an RMI right now. Not only can you get TWO electronic RMIs in a Sandel EHSI, but you can even set up a portable Garmin 195 or 295 or 196 GPS with a bearing pointer that functions as an RMI. Plane I look to buy has an HSI already (King 150 AP/FD), but I was thinking of replacing the ADF indicator with a dual-needle RMI. Also, it's going to get a Garmin 530 ro replace the King Loran (not much use out here in the west). If you have an IFR-legal ADF in your airplane, it is perfectly legal to fly an NDB approach while you supplement your ADF navigation with RMI information from your portable GPS -- just be sure your ADF remains your primary navigational source. What does the ADF have to be the primary? Thanks!! Tom -- DeBeers ad's through the years: "A Diamond is forever!" then: Diamonds - Take her breath away!! Then again: Diamonds - Render her speechless! Why don't they just say it: Diamonds - That'll shut her up! |
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