IFR Communication Definitions and Procedures

Flashcards covering standardized definitions, abbreviations, and procedures for IFR communication based on lecture transcripts.

Broadcast

A transmission of information relating to air navigation that is not addressed to a specific station or stations.

Air-ground communication

Two-way communication between aircraft and stations or locations on the surface of the earth.

Verify

Check and confirm with originator.

Disregard

Consider that transmission as not sent.

Expected Approach Time (EAT)

The time at which ATC expects that an arriving aircraft, following a delay, will leave the holding point to complete its approach for a landing.

Visual approach

An approach by an IFR flight when either part or all of an instrument approach procedure is not completed and the approach is executed in visual reference to terrain.

Clearance limit

The point to which an aircraft is granted an air traffic control clearance.

Automatic Terminal Information Service (ATIS)

Routine information to arriving and departing aircraft by means of continuous and repetitive broadcast.

Way point

A specified geographical position used to define an area navigation route or the flight path of an aircraft employing area navigation.

Acknowledge

Let me know that you have received and understood this message.

Approved

Permission for proposed action granted.

Cancel

Annul the previously transmitted clearance.

Check

Examine a system or procedure.

Contact

Establish radio contact with … .

Correct (as a phrase)

An error has been made in this transmission. The correct version is … .

Negative

That is not correct.

Recleared

A change has been made to your last clearance.

Report

Pass me the following information.

Break break

It indicates the separation between messages transmitted to different aircraft in a very busy environment.

IMC

Instrument meteorological conditions.

$$H24$$

Continuous day and night service.

AIS

Aeronautical information service.

SAR

Search and rescue.

INS

Inertial navigation system.

MLS

Microwave landing system.

SELCAL

A system which permits the selective calling of individual aircraft over radiotelephone channels linking a ground station with the aircraft.

SSR

Secondary surveillance radar.

RNAV

Area navigation.

RVR

Runway visual range.

"Heavy" call sign suffix

Suffix used by aircraft with a maximum take-off weight of more than $136$ tonnes in the initial call to the aerodrome control tower and the approach control unit.

Readback requirements

Elements including $SSR$ code, $QNH$, take-off clearance, and speed instructions that shall always be read back.

"Take-off" phrase usage

This phrase is used only by the control tower; a pilot should never use it except to acknowledge a take-off clearance.

Aborting take-off

Phrase used by a pilot to inform the control tower that they have to abandon the take-off manoeuvre.

Going around

Phrase used by a pilot to inform ATC that he is initiating a missed approach procedure.

Position report essential elements

Aircraft identification, position, time, and level.

Correction

Word used to indicate that an error has been made in a transmission or message.

Words twice

Phrase used when communication is difficult to request that every word or group of words be sent twice.

Squawk $7600$

The specific transponder code used when an aircraft encounters radio communication failure.

PAN PAN MEDICAL

Signal indicating a message concerning a protected medical transport operated by aircraft assigned exclusively to medical transportation.

MAYDAY

A signal sent by radiotelephony indicating that imminent danger threatens the aircraft and immediate assistance is required.

PAN PAN

A signal sent by radiotelephony indicating a very urgent message concerning the safety of a ship, aircraft, or other vehicle, where immediate assistance is not required.

Friction coefficient $45$

Indicates that braking action is good.

Friction coefficient $20$

Indicates that braking action is poor.

Unreliable braking action

Reported when the runway is covered with wet snow and slush.