IFR En Route

Question 1

What information is on a low altitude IFR chart

Answer 1

Victor Airways, Black, and RNAV T-Routes, Blue, below 18000 MSL

Question 2

What in formation is on a high altitude en route chart

Answer 2

Jet Airways, black, and RNAV Q-routes from FL180 to FL450

Question 3

How often does the FAA issue a new set of updated en route charts ?

Answer 3

Every 56 days

Question 4

For victor airways which direction doe even and odd number airways run?

Answer 4

Even numbered airways East / West

Odd numbered airways North/South

Question 5

What does the number in the square box represent ?

Answer 5

Solid Black box victor airway number

White box is the nautical distance between vortacs

Question 6

What do triangles on Victor airways represent ? What does black vs brown mean ?

Answer 6

Solid triangle compulsory reporting point

Non-filled triangle is non-compulsory reporting point

Black is a VOR based reporting point and brown is a NDB reporting point

Question 7

What do blue stars stand for and what is the difference between a filled and unfilled star?

Answer 7

RNAV waypoint position reports

Solid - compulsory
Unfilled - non-compulsory

Question 8

What does a non-compulsory reporting point mean?

Answer 8

Reporting is requested when requested by ATC

Question 9

Where does the MEA show up on a chart?

Answer 9

Altitude shows up as a number above the Victor airway number. If number is published below mea preceded by a * minimum obstacle clearance altitude

Question 10

What does OROCA stand for and where is it shown on the chart?

Answer 10

Off Route Obstruction Clearance Altitude used when flying direct and show on the chart as a large number in size followed by a smaller number

It does not guarantee nav signal reception or radar

Question 11

What is a MRA and how is it shown on a chart?

Answer 11

MRA : minimum reception altitude to receive RNAV signals used to identify airway intersections.

shown on chart as a flag with an R in off of an airway

Question 12

What does MEA Gap stand for and how is it show on the chart

Answer 12

Indicates there is a gap in reception of navigation signal coverage at the MEA. This is shown as a note on top of the Victor airway

Maximum gap length is 1.444 x altitude in 1000s of ft

Question 13

What does MAA on airway chart mean?

Answer 13

Maximum Authorized Altitude (MAA) is the highest altitude permitted on an airway

Question 14

What does a T at the end of an airway line mean at a reporting point ?

Answer 14

The altitude changes for the MEA

Question 15

What does MCA mean and how is it shown on a chart

Answer 15

MCA: minimum crossing altitude - altitude required before crossing a fix

Shown on a chart by a flag with an X in it followed by a altitude

Question 16

When should a VOR change over occur on an airway?

Answer 16

The midpoint unless there is a perpendicular line crossing the airway to show the change should be made elsewhere

Question 17

What do blue and green airports on the Instrument chart mean? What does brown mean?

Answer 17

Published instrument approaches is available.

A brown airport is published for an emergency and no instrument approach is available

Question 18

What is a T-Route ?

Answer 18

Terminal Transition route

Question 19

What does MEA mean?

Answer 19

Minimum Enroute Altitudes