IFR En-Route Procedures - QT

Lesson Quicktakes cover the items that should be memorized from each of the wifiCFI Lessons. They do not cover all of the lesson details in-depth.


IFR LOW EN-ROUTE CHARTS:

These charts are established across the United States at flight altitudes below 18,000’ MSL.


SELECTING THE CRUISING ALTITUDE:

Magnetic Course of 360-179 = Odd Altitudes

Magnetic Course of 180-359 = Even Altitudes


EN-ROUTE ALTITUDES:

MEA = Minimum En-Route Altitude.

Obstacle Clearance = 1,000’ Mountainous, 2,000’ Non-Mountainous.

Navigation Coverage = Entire Route Segment.


MOCA = Minimum Obstacle Clearance Altitude.

Obstacle Clearance = 1,000’ Mountainous, 2,000’ Non-Mountainous.

Navigation Coverage = Partial Route, 22 NM from each VOR.


MAA = Maximum Authorized Altitude.

Highest Altitude along a particular route.


MRA = Minimum Reception Altitude.

Minimum Altitude to identify an Off-Route VOR.


MCA = Minimum Crossing Altitude.

Minimum Altitude to cross a particular waypoint.


OROCA = Off-Route Obstacle Clearance Altitude.

Obstacle Clearance = 1,000’ Mountainous, 2,000’ Non-Mountainous.

Minimum Altitude when flying off Victor Airways.


MSA = Minimum Sector Altitude.

Minimum Altitude for a given sector on an Instrument Approach Plate.

Used in cases of emergencies.


FLY-BY VS FLY OVER WAYPOINTS

Fly Over Waypoint = Must fly over the waypoint prior to making any turns.

Fly-By Waypoint = May “cut the corner.” Do not have to cross waypoint prior to turning.


VOR CHANGEOVER POINTS:

Halfway between each VOR.

If there is a bend in the airway.

Where the changeover symbol indicates.


ATC REPORTING POINTS

Compulsory Points = Reports must be made when not in Radar Contact.

Non-Compulsory Points = ATC may request pilots to make reports at these points.


CRUISE CLEARANCES:

Allows the pilot to select their cruising altitude between the MEA and the ATC assigned Cruising Altitude.

Also clears pilots for their desired Instrument Approach at the Destination Airport.


VFR ON TOP:

Used to fly IFR through the clouds and then continue VFR on Top.

Pilots are responsible for their own traffic separation.

Must maintain regulated VFR Cruising Altitudes.

Comply with all Instrument Flight Rules.

Comply with VFR Visibility and Cloud Clearance Requirements.

Advise ATC of any altitude changes.


MANDATORY REPORTING TIMES TO ATC (MATHCALLS):

M = Missed Approach.

A = Altitude changes when VFR on Top.

T = True Airspeed change of +/- 10 KIAS or 5%.

H = Holding.

C = Cannot maintain 500 FPM climb or descent.

A = Altitude and time at the Holding Fix.

L = Leaving an assigned altitude.

L = Loss of Communication or Navigation Equipment.

S = Safety of flight issues.


ITEMS TO INCLUDE IN REPORTS TO ATC (IPTANES):

I = ID (tail number).

P = Position.

T = Time.

A = Altitude.

N = Next Fix.

E = ETA at Next Fix.

S = Supplemental Information.

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