Enroute Flashcards
What is a solid triangle on a enroute chart?
a mandatory reporting point
What is an open triangle on a enroute chart?
a on demande reporting point
When are mandatory reporting points no longer required to report?
When the aircraft has been identified by ATC
When should you advise ATC of a change of speed?
a change of 5% or mach 0.01 difference
How wide is the primary obstacle clearance area (VHF)?
4NM on each side of the centerline, making it 8 NM wide
what is the angle of the navigational precision lines (VHF)?
4.5 degrees on each side of the route. They cross the boundaries of the primary area at 50.8NM from the installation
Whats the minimum obstacle clearance altitude over non mountainous regions?
1000 feet over the highest obstacle
Whats the minimum obstacle clearance altitude over mountainous regions?
1500 feet over the highest obstacle in zone 2,3,4
2000 feet over the highest obstacle in zone 1, 5
What are the dimensions of the secondary obstacle clearance area (VHF)?
It starts 500 feet above the highest obstacle and at the edge of the primary zone. The secondary zone goes up 500 feet and is 2 NM wide. A reversed triangle.
How are the navigation precision lines of the secondary zone drawn (VHF)?
It’s at 6.7 degrees on either side of the route extending up to 50.8 Nm
Whats the primary obstacle clearance area for a LF/MF airway/route?
4.34 NM on each side of the centerline
At what angle are the navigation precision lines drawn at?
They are positioned at 5 degrees on each side of the center streaching to 49.66 NM from the starting point.
How are high level RNAV routes called (FL 180 and above)?
Q routes
How are low-level RNAV routes in controlled airspace called?
T routes
How are low-level RNAV routes in uncontrolled airspace called?
L routes
