View Full Version : VASI, AVASI, etc, maybe a stupid question, but...
Vincent340
21st Nov 2007, 16:24
Hi everyone,
Maybe it's a stupid question, so in advance sorry about that.
I know what is a VASI and an AVASI, but what is exactly a SAVASI (Simplified Abbreviated Visual Approach Slope Indicator) ? What does 'Simplified' mean and how does it work ?
Thank for your answer(s).
Vincent.
Melax
22nd Nov 2007, 03:55
try:
http://books.google.com/books?id=YkguT0i6WTMC&pg=RA1-PT86&lpg=RA1-PT86&dq=simplified+abbreviated+visual+approach+slope+indicator&source=web&ots=GcpkkdYsYr&sig=iquOiZ_xCCo3pPtwCT_OpGl12V8
Dream Land
22nd Nov 2007, 04:20
Cool search engine!
Vincent340
22nd Nov 2007, 13:50
Thank you for your reply, I didn't know this mean to search infos.
Melax
22nd Nov 2007, 20:59
I like your # of Posts 767 ...
That's cool !
md-100
23rd Nov 2007, 20:41
which is the difference between a 3 degree PAPI and a 3 degree VASI??
H Peacock
25th Nov 2007, 17:16
which is the difference between a 3 degree PAPI and a 3 degree VASI??
PAPIs are a set of 4 lights mounted either side of the instrument TD point. Both pairs should be identical. For each set, too low and you get 4 red lights. As you get progressively stepper you will go through: 3 red, one white; 2 of each; one red, 3 white; 4 white. Two of each usually being 3 deg.
VASIs are separate bars of lights (like multiple PAPIs) but each bar is always all red or all white. Glideslope info comes from the progressive change of colour of the bars. I'll try to find some pictures.
Ahh! Found some of PAPIs
http://www.agur4u.co.il/pic1/papi.gif
And some VASIs.
http://www.flightgear.org/Docs/Tutorials/crosscountry/vasi2.jpg