A aviation & planes forum. AviationBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AviationBanter forum » rec.aviation newsgroups » Instrument Flight Rules
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

GPS approach question



 
 
Thread Tools Display Modes
  #1  
Old January 3rd 05, 05:38 AM
CFII_ASC
external usenet poster
 
Posts: n/a
Default

I don't have the book here, but I *believe* the 30nm is referenced to
the Airport Reference Point, which is the physical location from which
they began the survey of the land to lay out the airport. Mostly this
is somewhere near the center of the airport, but not always. sometimes
it is not even *on* the airport.

The last issue, #8, is implemented on some boxes and not others. I do
not remember if the 89B had that feature or not. But on some machines
it was wired to automatically switch the NAV/GPS switch back to NAV if
you had a valid Localizer freq in Nav 1. The theory was that if you
were trying to fly an ILS and fogot your NAV/GPS switch was left in the
GPS position, it would automatically default back to the NAV position
so that the data displayed on the needle you were tracking was from the
ILS and not the GPS (that you were presumably not using.)

Of course, this created the opposite problem; if you are trying to do a
GPS approach, and forget to get the ILS freq out of Nav 1, it would not
allow you to *load* the approach, let alone fly it. Infuriating.

I have not seen this feature implemented on any of the more recent
boxes.

Bottom line, you have to know what your box does and doesn't do
automatically, and when it does it, and why. An put a check of that
NAV/GPS switch in your set-up procedure for *all* your approaches, not
just the GPS ones.

Regards,

Gene

  #2  
Old January 3rd 05, 01:51 PM
Roy Smith
external usenet poster
 
Posts: n/a
Default

"CFII_ASC" wrote:
Bottom line, you have to know what your box does and doesn't do
automatically, and when it does it, and why. An put a check of that
NAV/GPS switch in your set-up procedure for *all* your approaches, not
just the GPS ones.


Yeah, I've been burned by that one, and it's one of the most common
mistakes I see students make.

The other common one (at least on the CNX-80) is to forget to hit the
EXEC button after modifying a flight plan or selecting an approach.
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Another approach question Andrew Sarangan Instrument Flight Rules 5 November 7th 04 05:44 PM
GPS approach question Matt Whiting Instrument Flight Rules 8 November 1st 04 10:51 PM
VOR/DME Approach Question Chip Jones Instrument Flight Rules 47 August 29th 04 05:03 AM
where to ask question about approach? J Haggerty Instrument Flight Rules 1 August 17th 04 06:30 AM
Established on the approach - Checkride question endre Instrument Flight Rules 59 October 6th 03 04:36 PM


All times are GMT +1. The time now is 06:11 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 AviationBanter.
The comments are property of their posters.