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Buffalo Niagara International Airport (KBUF) does not have an associated VOR or VORTAC, yet it has a published frequency box that lists a VHF frequency (116.4) in parentheses. Why is this frequency in parentheses and what does it designate? See below:

enter image description here

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  • $\begingroup$ Well, chart supplement says "(H) DME 116.4 BUF Chan 111 N42º55.74´ W78º38.78´ 280º 3.8 NM to fld. 730/0E". Someone else can surely give a more comprehensive answer though. $\endgroup$ Apr 29 at 18:19
  • $\begingroup$ (Looks like you've got your answer now-- maybe-- or at least some ideas for further refining / expanding the question or soliciting more details from the answerer-- ) $\endgroup$ Apr 29 at 18:27

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Complementing William's answer; my go-to for such intricacies is the specifications used to create the charts by the Interagency Air Committee. Which here also serves as a formal source that includes the word "parentheses":

3.9.3.12.3 [...]

DME facilities shall be shown as illustrated in Appendix 6.

DMEs shall be identified by name, channel, identification letters, Morse code, and paired frequency in parentheses.

And from said Appendix 6:

enter image description here

As you can see, the whole DME "box" is a perfect match.

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There is a VOR/DME for BUF on that frequency, BUT it's either been, or is in the process of being partially decommissioned, leaving just the DME portion.

And when you've got just a DME you put the frequency in parenthesis.

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  • $\begingroup$ I'm actually not seeing the explanation of the frequency in parenthesis on your last link-- ? $\endgroup$ Apr 29 at 18:40
  • $\begingroup$ @quietflyer - look at item #5 in the last link. $\endgroup$
    – 757toga
    Apr 29 at 18:43
  • $\begingroup$ OK got it. It is depicted, even if parentheses aren't specifically explained. $\endgroup$ Apr 29 at 18:44

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