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4 Answers

Number of VOR’s Required for IFR Flight

Asked by: 11552 views FAA Regulations

I would like to find out if it is required to have 2 functioning VOR's fitted for IFR flight.

Inputs much appreciated.

Thanks

DB

 

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4 Answers



  1. John D. Collins on Apr 17, 2013

    No, at least not in general. There are some procedures that require dual VOR capability, but they are in the minority. It certainly makes life easier if one has dual VOR receivers for determining intersections using a VOR. I have a WAAS GPS and haven’t used VOR’s in at least 4 years other than to cross check what I was navigating by using the GPS.

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  2. Sam Dawson on Apr 18, 2013

    As John wrote there may be IAP requirements for two, but there is no requirement for ANY VOR’s to be operational unless it is aircraft specific (see 91.213). 91.205 lists the general minimum equipment requirements for IFR flight and states:
    “(2) Two-way radio communication and navigation equipment suitable for the route to be flown.”

    Navigation equipment suitable for the route to be flown MAY just be an ADF and in the past I flew military aircraft IFR that only had an ADF… though in most parts of the US today this would not suffice. Also legally flew aircraft IFR without transponders- unless that has recently changed it is also not required for IFR unless specified for specific airspace.

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  3. Daniel Burger on Apr 18, 2013

    Thanks for the replies. How do you manage two VOR’s in a multi crew environment? Would you propagate that VOR 1 / Nav 1 display e.g 115.4 and VOR 2 / Nav 2 display the same station at the RHP station (redundancy) or would it be acceptable to have the VOR 1 tuned to a VOR station and the other VOR tuned to an ILS for example – loosing the redundancy in the first situation? I have heard some strong opinion in favour of the first setup, in other words, both aids tuned to the same station.

    Thanks again for your inputs and the benefit of your knowledge.

    Regards
    DB

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  4. Sam Dawson on Apr 18, 2013

    Two crew environment, both crews are normally tuned to the same frequency during an approach.

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