What is the intent of visual separation? Or why use it?
Additionally, I have seen controllers state the phrase 'maintain visual separation" after giving a traffic calls to VRF ac, to a transition ac, to an IFR ac or VFR ac following another ac in the pattern. I have never understood the point of this, as VFR ac are to see and avoid anyway, and when the reason was given, "it takes the responsibilty off the controller if the ac hit another ac", just didn't make much sense. In a VFR tower environment, how is this applied? Thank you.
Last edited by Boxcar65; 02-28-2012 at 10:54 AM. Reason: further understanding
It allows for much better efficiency and higher traffic fllow by negating the need to apply some form of IFR distance, time, or altitude separation, which would cripple a terminal environment specifically. If visual separation weren't available, much of the nations moderate to busiest airports would grind to a crawl. There would be additional problems at lower en-route altitudes as well.
3-9-7. WAKE TURBULENCE SEPARATION FOR INTERSECTION DEPARTURES
b. 3. Successive touch-and-go and stop-and-go operations are conducted with a small aircraft following another small aircraft weighing more than 12,500 lbs. or a large aircraft in the pattern, or a small aircraft weighing more than 12,500 lbs. or a large aircraft departing the same runway, provided the pilot of the small aircraft is maintaining visual separation/spacing behind the preceding large aircraft. Issue a wake turbulence cautionary advisory and the position of the large aircraft.
haha, yea. vv is rite.
ill also do it if Ihave a fast guy behind a slower guy using runway sep. going in the same general direction. They radar doesnt need their sep. and can get the guy on course sooner.
def. use it 4 wake turb.
i wont say which airport, but someone recently got double digit OEs in an hour not doing this.
There are many dif. times any ways you can use it in radar 2.
MAKE SURE YOU SAY THE ENTIRE PHRASE! DO NOT JUST SAY "maintain visual seperation"!
Use the ENTIRE THING
MAKE SURE YOU GET AN AWKNOWLEDGEMENT FROM THE PILOT WITH CALLSIGN
otherwise, guess what.......
you will be filing an ATSAP after you lost seperation!
My point was just that if there's a minima to maintain, IE wake turbulence or helo's following somebody to the runway then you tell a pilot to maintain visual separation. having one vfr aircraft follow another and there's no wt considerations a simple instruction to follow, pass behind ect. is sufficient.
I totally agree using it for wake turbulence is a correct application too.
Jtime-can you explain your second sentence a little. Not sure I understand.
citation departs rwy 34
b737 rite behind him
citation on course heading is 030
737 heading is 035
clear cit for takeoff on course
just one example
ask 737 if he has cit in site
if he does,
maintain vis sep from that blahblah clear for takeoff on course
he can roll w 6000 and airborne.
cit needs to be told traffic has you in site maintaining visual blah
departure needs to know also, because then he doesnt need his 3 miles
I'd say it depends on the type of citation. One of the things CH. 7 says to consider is aircraft characteristics/performance.
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