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Old 11-15-2007, 02:15 PM
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Originally Posted by KiloAlpha View Post
Per Jep, it is an elevation change of 3000' or greater within a distance of 10 miles.
Ok, that's the ICAO definition of a mountainous area. Notice that ICAO is in parenthesis next to the definition. I was thinking of terrain clearances for route/grid MORA's: 1,000 feet over non-mountainous terrain and 2000 feet over mountainous terrain (highest elevation 5001' and up). That was a good one, thanks!

Originally Posted by KiloAlpha View Post
That IS the Jepp definition. Out of curiosity, what is the FAA's definition?
I would think the FAA would use the ICAO definition as well. Any thoughts?
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Old 11-16-2007, 09:33 AM
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The classic XJT question....

You're flying into Saltillo, Mexico at night. 150 miles out Center clears you for the approach... and tells you to contact tower when able. What do you do?


And what's your transition altitude in the descent?


(sorry, you'll need the Saltillo plate for this one)
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Old 11-16-2007, 09:48 AM
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Originally Posted by KiloAlpha View Post
What constitutes "mountainous terrain?"
For the FAA "The mountainous/nonmountainous areas are found in Title 14 CFR, Part 95."

If anyone actually finds it please post it here, in the meantime I'd go with the Jepp version.
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Old 11-16-2007, 10:58 AM
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On a GPS approach, what's the difference between the waypoint markers that are 4-point stars and the ones that are 4-point stars with a circle around them?
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Old 11-16-2007, 07:40 PM
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Originally Posted by CL65driver View Post
The classic XJT question....

You're flying into Saltillo, Mexico at night. 150 miles out Center clears you for the approach... and tells you to contact tower when able. What do you do?


And what's your transition altitude in the descent?


(sorry, you'll need the Saltillo plate for this one)
I have the Saltillo, Mexico VOR DME 2 RWY 17 and the VOR DME 3 Rwy 17 thanks to an XJT captain I met in another forum a few days ago.
  1. VOR DME 3 Rwy 17 -- Proceed to the initial approach fix (SLW) at altitude, enter a hold, and descend in the hold so as to cross the SLW VOR at 10,000' outbound on the 336 degree radial. Then fly outbound on the 336 degree radial while descending to 7,700' until 10 DME, and then a right hand turn to intercept the 172 degree bearing inbound. Once established inbound between 10.0 and 7.0 DME on the 172 bearing inbound, I can descend to 6,800'. Upon crossing the FAF at 7.0 DME, I can descend to 5,500' until D3.0. After D3.0 I can descend to my MDA of 5,300'. The MAP is the VOR.
  2. Transition levels and altitudes are something I am still trying to get a solid grasp on, so help me out here if I'm wrong. For this particular approach the Trans. Level is FL195 and the Trans. Alt is 18,500. The difference between the two is the transition layer. The way I understand it, when descending through a transition layer you go to local altimeter setting at the transition level. So in this case we'd set local altimeter (QNH) when descending through FL195. If we were climbing through the transition layer, we'd set 29.92 (QNE) when climbing through 18,500 feet. Am I correct?
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Old 11-16-2007, 07:51 PM
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Originally Posted by DamonMeyer View Post
On a GPS approach, what's the difference between the waypoint markers that are 4-point stars and the ones that are 4-point stars with a circle around them?
waypoint markers that are 4-point stars are non-compulsory/compulsory airspace fixes. non-compulsory are white and compulsory are shaded black. The one's that have circles around them are fly-over airspace fixes. You'll find these prior to a turn. Once you overfly the waypoint, you can initiate an intercept maneuver to the next flight segment.
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Old 11-16-2007, 08:00 PM
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Originally Posted by HSLD View Post
For the FAA "The mountainous/nonmountainous areas are found in Title 14 CFR, Part 95."

If anyone actually finds it please post it here, in the meantime I'd go with the Jepp version.
I searched the electronic regs on the faa website, but only found areas designated as mountainous terrain. No definition. I thought I'd check out part 1 definitions, but no joy there either.
part 95
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Old 11-21-2007, 08:52 PM
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My understanding is the defintion vanished some time ago....however the areas designated as moutains terrain (shaded US map) was determined off areas that exceed 5000'....as you suggested initially.

I've spent years asking that question as a military Instructor pilot planning and teaching students to fly miltary low level routes.
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Old 11-21-2007, 10:00 PM
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Originally Posted by multipilot View Post
waypoint markers that are 4-point stars are non-compulsory/compulsory airspace fixes. non-compulsory are white and compulsory are shaded black. The one's that have circles around them are fly-over airspace fixes. You'll find these prior to a turn. Once you overfly the waypoint, you can initiate an intercept maneuver to the next flight segment.
No circle indicates a waypoint defining the route, also called a fly-by waypoint. On a GPS approach, turns should be made before reaching these points so that the aircraft maintains the centerline of the route/approach course.

Waypoints with a circle are fly-over waypoints. The aircraft must fly over these points. They are most commonly found at the MAP and the holding fix for the missed approach procedure.
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