VFR navigation
Thread Starter
Joined: May 2005
Posts: 47
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From: Éire
VFR navigation
Hi all
When I did my CPL we had a formula that for every one mile we were off track we would turn left/right 30 degrees for x-amount of minute's. This was based on a TAS of 120 Knots, just wondering what is the formula to work it out for other speeds as I am flying a Grob 115 that has no GPS or DME and a VOR receiver that has a questionable accuracy! Just want to make sure that my nav is up to scratch before I make a dipstick of myself next weekend
When I did my CPL we had a formula that for every one mile we were off track we would turn left/right 30 degrees for x-amount of minute's. This was based on a TAS of 120 Knots, just wondering what is the formula to work it out for other speeds as I am flying a Grob 115 that has no GPS or DME and a VOR receiver that has a questionable accuracy! Just want to make sure that my nav is up to scratch before I make a dipstick of myself next weekend
Joined: Apr 2009
Posts: 2,817
Likes: 1
From: Hotel Gypsy
SCA, 40 deg for 90kts, 30 for 120. That should just about cover it for a Grob. There's a long and heated discussion on the precise mathematics somewhere here the result being that the maths doesn't really matter.
