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Traffic Patterns / Airspaces (Read 1850 times)
Jul 17th, 2005 at 6:20am

-sam-   Offline
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EDDM

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Hi there,

I have some questions regarding Traffic Patterns
and Airspaces.

1. If you want to enter a Traffic pattern, do you always have to enter at the middle of
of the downwind leg (think it´s described like that in the "learning center" but I don´t really understand the formulation')
or can you enter
at the nearest point like... the base leg if this would be the nearest entry point ?

2. Regarding the alltitude. Normally it´s 1000ft
above groundlevel. But the controller can give me another
alltitude if there are more aircraft in the pattern. Is this correct ?

3. If you look at ETHA (fs9) and you click in the map on the boundary you will see that there are two boundaries
in the same place. The first says floor/ceiling 0/4000 and the second one 0/10000. Is this a bug or why are there
two different boundaries ?

4. When you look on your map (fs9) north of EDDM
There are a lot of airspaces that are labeled "restricted"
but are no class-B airspaces. For example "Siegenburg"
restricted area 0-12000 ft. When I´m VFR does it mean
I may not enter this airspaces.. or am I just forced to
contact a controller. (A center I suppose) ?

Thank You !!



« Last Edit: Jul 17th, 2005 at 11:02am by -sam- »  

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Reply #1 - Jul 17th, 2005 at 1:21pm

Rocket_Bird   Offline
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In entering a traffic pattern, it depends on whether or not the airspace is controlled.  In uncontrolled airspace, you would typically fly over the field (to examin the wind direction) about 1500' above ground to the upwind side (the side opposite of the downwind side).  Then from the upwind side, you would descend to 1000' (circuit altitude) to join on the downwind.

Now its different in controlled airspace.  Sometimes they will tell you to come straight in (on final), or join like a base leg or something.  Normally instructions all the way through will be given by the controller.  In controlled airspace, typically you can maintain whatever altitude you are at, and the controller will tell you to change. 

As for question 3, im not too sure what your asking.  Im thinking it means different airspaces?  One for arrival, the other for terminal or tower.... got me on that

For question 4, i don't fly in eddm much (i think ive only gone there once on an atc session online  Grin).  From knowledge off hand though, you shouldn't be going into restricted airspace.  Any class C airspace should be good if your doing VFR.  If the whole area is restricted... then... thank god its FS9 Smiley
 

Cheers,
RB

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Reply #2 - Jul 17th, 2005 at 3:50pm

beefhole   Offline
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You always, ALWAYS want everybody that's in the pattern to be at the same altitude.  Always.
 
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Reply #3 - Jul 18th, 2005 at 5:51am

-sam-   Offline
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Thank You very much !!
 

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Reply #4 - Jul 19th, 2005 at 9:12am

Hester   Offline
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We have another additional way of entering the circuit at uncontrolled airports here in Canada: the mid-field crosswind.  Basically, from the upwind side you can fly midway over the field at circuit alt, turn onto downwind and finish the rest of the circuit  Smiley.
 
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Reply #5 - Jul 19th, 2005 at 6:23pm

Boss_BlueAngels   Offline
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As for non-towered airports, it also depends upon what the other traffic is doing.  You don't want to do something to cut off someone else, or present a hazard.  If there is nobody around you can usually get away with entering at the next best location.  Some times I just do a straight in approach.  You CERTAINLY want to announce your position and intentions every moment possible so that if someone is listening, they know where you are.  

Where i fly out of there is A LOT of student traffic and all schedules are based on 2 hour intervals on the even hours... this causes a huge amount of airplanes to be entering the pattern.. so ever runway has only a LEFT pattern.  So it can get tricky timing your downwind/upwind entries.

And as stated, towered airports are a free-for all when it comes to traffic patterns.  Some will have call base for you, (ie streach it out for slower traffic) straight in, upwind entry, downwind. 45 left sideways crab to the crosswind... whatever they can to allow for safe flow.  

I've never heard of them having someone change altitude for landing traffic though.  That seems kind of odd.  I've always just had them call my base leg.



And as for same altitude... a lot of airports seperate turbine and piston airplanes by altitude.  Turbines usually get 1,500 AGL and the pistons get 1000.  At one airport I read had three altitude,s 500AGL for the ultralight traffic.  

You don't really want a bunch of turboprops or jets chewing on the tailfeathers of a C-152... nobody like having to go THAT SLOW. lol  

And I'll have to look at the airspace things you're talking about...

Hope this helps.


Restricted airspace is usually for military operations.  They will be "hot" or in use at certain times.  Depending upon the operations within that airspace you are not allowed within the boundries.  Over here in Ellensburg Washington we have three MOA's (Military Operations Areas) that are hot all the time which includes live firing from helicopters and other aircraft.  They certainly don't want some Cessna 152 entering during these types of exorcises so it is restricted.  In RL you would receive NOTAMS concerning whether or not they are active.  

OK, as for the airspace boundries around that other airport it must be restricted airspace within restricted airspace.  lol  I guess if the other larger one 0/10,000 is INACTIVE you can fly around the other one. lol  that's my guess.  weird.
 

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Reply #6 - Jul 20th, 2005 at 8:03am

-sam-   Offline
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Thank You people !! This is really helpfull information
for me.
You guys are real pro´s !!

Regarding the different altitude in traffic patterns. I think I red something about it in the FS "learning center"
Maybe I missunderstood something. I will see if can
find it.

OK I think I understand now how a traffic pattern is flown.
Maybe I will post some screenshots of the flightsim map
in this thread.. so you can tell me if I did it how it should
have been done.

I´m asking for this cause of two reasons. 1. I want to make my flightsim more realistic. 2. I want to join vatsim. After listening to their ATC now several times, I think I still have to learn a lot before I seriously can join.

I think the next thing to learn will be "holding patterns".
Expect some more questions ! Grin
 

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Reply #7 - Jul 21st, 2005 at 12:25am

beefhole   Offline
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It would be a serious traffic hazard to have people at different altitudes in the same TP.  There's a reason there's a uniform TPA-it's so that everybody can see everybody else, and everybody knows what everybody's doing.

In RL, you will come across pilots who just don't talk, and man do they piss me the **** off.  You can call them again and again and again and they just won't answer.  It is because of people like this that there needs to be an extra layer of safety over the situational awareness of announcing your position.
 
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Reply #8 - Jul 21st, 2005 at 4:59am

OTTOL   Offline
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Quote:
It would be a serious traffic hazard to have people at different altitudes in the same TP.  There's a reason there's a uniform TPA-it's so that everybody can see everybody else, and everybody knows what everybody's doing.

In RL, you will come across pilots who just don't talk, and man do they piss me the **** off.  You can call them again and again and again and they just won't answer.  It is because of people like this that there needs to be an extra layer of safety over the situational awareness of announcing your position.
I know that you mean well but the BOSS_BA is correct. Read any AF/D, 1,500'agl is standard for turbine powered aircraft at most fields with a CTAF.
 

.....so I loaded up the plane and moved to Middle-EEEE..........OIL..that is......
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Reply #9 - Jul 21st, 2005 at 10:21am

beefhole   Offline
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Quote:
I know that you mean well but the BOSS_BA is correct. Read any AF/D, 1,500'agl is standard for turbine powered aircraft at most fields with a CTAF.

Oops, I forgot about jets... I thought he was just refering to props.  It's alright for jets because (in general) they're not following the same pattern as a prop, they take their downwind further from the field and extend it more than a prop would.  We have citations in and out of Wings constantly-they fly at 2,000' AGL in the pattern.

So, just to clarify, you don't want two 172s at different altitudes, right on top of eachother, with the same ground track landing at the same place in the same pattern.
 
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Reply #10 - Jul 31st, 2005 at 12:28am

beaky   Offline
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Standard rule-of-thumb for nontowered airports:
Enter the downwind at a 45-degree angle to your downwind leg heading (not necessarily midfield but it's best to do that), at the TPA (very very important!!) when you enter. In RL, the TPAs vary, but the 1000AGL/1500AGL rules should do the trick in FS. You can find the airport elevation (above mean sea level) in the info box for the airport in the Map page; just add 1000 or 1500 to that number to determine your TPA for that field.
Most uncontrolled fields use a left-hand pattern; there are some that don't in RL, but no way to tell in FS, except for the obvious stuff like mountains close to the runway on one side, etc.
And yeah, like Boss said, if you're going to come straight-in or some other nonstandard entry or approach, you need to announce it (and keep your eyes peeled!)... but of course this won't work in FS9. It's always safest to fly a standard pattern, and it's good practice for making precise heading changes, etc.
If the tower is conrolling you, all bets are off, except for the TPA (unless they say otherwise). They'll usually tell you to make left turns or right turns, unless they clear you for a straight-in
approach.
As far as the boundary thing goes: I had a different answer, then I looked at the map of that airport. Looks like a bug, or perhaps a small portion of that box goes up to 10,000 but they forgot to add the line. Only way to know for sure is to look at a RL chart of that area.
"Prohibited" airspace means: "Stay the hell out!"Examples: the airspace around Camp David, the White House, etc.
"Restricted" means: "You'd better have a good reason!" Example: the helicopter training area near West Point, south of SWF.
   I think in RL there are ways to get permission to enter restricted areas, but I avoid them like the plague- same with Alert, Warning, and MOAs... not worth the risk even with clearance to enter, IMHO... accidents can and do happen in those areas, esp. when you have pilots training in high-speed low-level IFR operations in military aircraft!! Flying a small piston plane in  RL, by the time you see that kind of traffic, it'll probably be the very last thing you see...
In some areas this can mean a long detour, though. The Gulf Coast of the US, for example... it's like one enormous MOA. There are lots of small airports down there, though- the local pilots must have to make quite a few phone calls before going on a trip.
But  I think in FS9 you just request clearance from the controller as you would for any kind of controlled airspace.
« Last Edit: Aug 24th, 2005 at 5:23pm by beaky »  

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Reply #11 - Jul 31st, 2005 at 8:55am

Sytse   Offline
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Or you could just call out a fuel emergency or sumtin and forget all the rules. If you like the guys from FFA that is...  Tongue
 
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Reply #12 - Jul 31st, 2005 at 9:12am

beaky   Offline
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No, you wouldn't want that hassle, from what I hear. Besides, improper pattern procedure is a great way to meet people- by accident...
I was once landing at a small field in Pennsylvania; did everything by the numbers, listening and talking on the CTAF, and some dumbass who wasn't talking on the radio tried to land on the same runway, going the other way, at nearly the same moment. The wind was light and variable, so technically he wasn't landing downwind, but still...
  I didn't see him because he came straight in, and by the time he crossed the threshold, I was already below 100 feet and looking only at the far end of the runway. To make things worse, he didn't go around- he just zoomed over me as I was rolling out and landed just beyond...  quite long, too.  My impression was that he saw my plane the whole time... he was assuming a great deal... if I'd panicked and tried to go around from below him, things might've gotten very dicey.
It was a dual training flight, and we were just making the one landing there, so I didn't take the time to stop and go over to where this "Sky King" was parked to introduce myself (with my fist!). I really wanted to, though- and my CFI was even more angry!
My lesson: expect the unexpected, and be looking for it. Most midairs occur on perfect VFR days, near small airports.
His lesson: If you won't or can't use the radio, at least follow the standard procedures, or  be ready to yield to those who do.
 

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Reply #13 - Aug 1st, 2005 at 9:36am

beefhole   Offline
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Rotty, that's why I want to spend as little time in GA as possible.  Because of idiots like that.  There's people who won't talk EVEN WHEN YOU ****ING ADDRESS THEM!  I can't stand it.
 
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Reply #14 - Aug 2nd, 2005 at 7:56pm

beaky   Offline
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Quote:
Rotty, that's why I want to spend as little time in GA as possible.  Because of idiots like that.  There's people who won't talk EVEN WHEN YOU ****ING ADDRESS THEM!  I can't stand it.


Ah, but that's one dingbat compared to dozens of pilots who were  courteous, conscientious,friendly,  and into flying for the sheer joy of it. And when you do start flying professionally, you will discover some reckless pilots with real attitude, I'll bet... Grin
Not to mention some cantankerous, inflexible controllers (or do they only hate us little guys?).
 

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Reply #15 - Aug 2nd, 2005 at 8:06pm

beefhole   Offline
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Quote:

Not to mention some cantankerous, inflexible controllers (or do they only hate us little guys?).

You'd be a generally angry person to if your job involved moving blips around all day for little pay Wink

Not to mention the worst part of it... constantly talking to people... it's terrible....
 
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Reply #16 - Aug 24th, 2005 at 7:41am

JFG389   Offline
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May I ask a question?

How far from the runway is the traffic pattern, for the base leg and downd legs, for non ILS or vor approches? If I'm to close then I miss the final, if I'm to far I have to come back to center finals. I flown only sim for years. The only time I come in on centering final is on ILS or  when I use the standard turn rates off downwinds, of I think three minutes.
Any helps here also?
 
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Reply #17 - Aug 24th, 2005 at 8:11am

Brett_Henderson   Offline
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For non-precision approaches, you can generally expect to fly straight in (circle-to-land and some approaches bring you in on other than runway heading). There is no standard downwind, base, etc..

If you have to go missed.. there will be a holding fix (nav-aid or intersection) that you'll climb and fly to.

I flew the VOR-A ( "A" meaning your inbound course is not runway heading (or close to it)) at Urbana, Ohio the other day. If it's flown perfectly, you reach the decision point pretty darn close to a 45-degree, downwind entry (assuming the wind favors that runway). These kind of approaches make me nervous. They assume enough visibility for you to negotiate some sort of pattern. Most approaches have you set up so when you "bust out" of the clouds.. there isn't much else left to do, except make an adjustment and land.

As a rule.. there is no standard pattern for instrument approaches.
 
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Reply #18 - Aug 24th, 2005 at 5:29pm

beaky   Offline
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Quote:
May I ask a question?

How far from the runway is the traffic pattern, for the base leg and downd legs, for non ILS or vor approches? If I'm to close then I miss the final, if I'm to far I have to come back to center finals. I flown only sim for years. The only time I come in on centering final is on ILS or  when I use the standard turn rates off downwinds, of I think three minutes.
Any helps here also?


Not sure if this is the info you want, but for light aircraft flying VFR in the pattern at an uncontrolled field, the usual thing is about 1/2 mile from the centerline on downwind. Depending on obstructions , the turn to final usually starts anywhere from 1/2 mile to a mile from the threshold. In faster planes at the higher TPA, I guess it'd be a mile to two miles when parallel to the runway. The general idea is to be within gliding distance of the runway at that altitude... wouldn't be a pretty landing if you had to turn around midfield to try to dump it on the runway in an emergency, but it'd be better than not being close enough to at least get onto the airport property.
 

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Reply #19 - Aug 24th, 2005 at 5:35pm

beaky   Offline
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Quote:
You'd be a generally angry person to if your job involved moving blips around all day for little pay Wink

Not to mention the worst part of it... constantly talking to people... it's terrible....


Oh, I know it's stressful... and believe me, I've dealt with some controllers who were also very calm, patient, and just plain friendly. One early Sunday morning at KTEB, I was greeted with "Nice day to go flying!", etc. by a very nice controller... he actually sounded like he was enjoying himself.
On a related note: Sunday before my flight, I turned on my old scanner to check the KEWR ATIS, and decided to listen to the tower freq. for a bit. Just as I tuned to the tower freq, I heard the controller testily repeating a ground instruction (to an airliner pilot), with an added reminder: "and don't use that word on the radio!". He sounded angry... I wish I'd heard what the pilot had said!! Cheesy
 

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Reply #20 - Aug 25th, 2005 at 7:54am

JFG389   Offline
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Thanks Rottydady and other pilots,

You information was very helpful!!!

But do you find that formilarity with Your airports and its surronding things, like tree, buildings and markers helps line things up on the pattern legs in VFR?
 
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Reply #21 - Aug 25th, 2005 at 8:12am

Brett_Henderson   Offline
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To a point, yes. But especially in light planes, and especially turning base.. the wind has more to say about it all than nearby landmarks. You've always got that big stretch of pavement in sight.. even well before you enter a pattern. If you use something like a building or road as your primary mark for transition from downwind to final.. you'll find yourself back on the throttle.. or worse.. dumping the flaps, slipping (sometimes not a good combo).. even S-turning to get down to the runway.

Taking off is another story. I fly out of a pretty busy, class D airspace airport (KOSU). More times than not.. you'll be given take-off clearance for runway heading, regardless of the direction you requested, just to get you off the ground. Some times you'll get,  "turn on course approved".. sometimes you won't and have to wait till you're clear of the airspace for a frequency change (or own navigation). With the two main runways (9/27 L/R) being parallel.. it's VERY important to stay ON runway heading.. not drift or P-factor your way into the other departure sector. As soon as I'm off the ground.. I pick a spot on the horizon and fly to it. That's easier than guessing at the wind or gauging the P-factor. It only takes a couple of minutes to clear the airspace.
 
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Reply #22 - Aug 25th, 2005 at 3:19pm

C   Offline
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Quote:
But do you find that formilarity with Your airports and its surronding things, like tree, buildings and markers helps line things up on the pattern legs in VFR?


Yes. It helps an awful lot if you have features on the ground to aid you (to track towards on the downwind leg, or a feature used to turn onto the base leg and finals etc*) as it can free up spare capacity for you to think about other things (downwind checks, other aircraft in the circuit, wind effects etc)...

*trying to think civilian circuits! - the last on I did of those must have been 2002! Military circuits are oval/racetrack shapes, with a continuous finals turn from downwind to the final approach...
 
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