0074
5th Sep 2009, 10:16
In my pervious companies in Scandinavia we used at set of corrections when flying over mountainous terrain in windy conditions:
< 30 kts 0 ft
31 - 40 kts 500 ft
41 - 50 kts 1000 ft
51 - 60 kts 1500 ft
Over 60 kts 2000 ft
I have tried to locate the origin of these corrections but until now without any luck - does any of you know where they are documented ?
I found another set of corrections reading the Doc 8168 but they are lower. Does the above include corrections or marging for mountainwaves or unstable air that the Doc 8168 corrections do not take in account ?
:ugh:Which one is the correct correction to apply ?
The Doc 8168 corrections are:
Corrections for strong winds in mountanious areas :
20 kts : 53 ft
40 kts : 201 ft
60 kts : 455 ft
80 kts : 812 ft
< 30 kts 0 ft
31 - 40 kts 500 ft
41 - 50 kts 1000 ft
51 - 60 kts 1500 ft
Over 60 kts 2000 ft
I have tried to locate the origin of these corrections but until now without any luck - does any of you know where they are documented ?
I found another set of corrections reading the Doc 8168 but they are lower. Does the above include corrections or marging for mountainwaves or unstable air that the Doc 8168 corrections do not take in account ?
:ugh:Which one is the correct correction to apply ?
The Doc 8168 corrections are:
Corrections for strong winds in mountanious areas :
20 kts : 53 ft
40 kts : 201 ft
60 kts : 455 ft
80 kts : 812 ft