ATPL Theory - VFR + IFR Communications Summary

ATPL Communications VFR / IFR SUMMARY_ 090
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This communication (090) summary will cover topics helpful
For your EASA ATPL exam preparations.




VFR & IFR
1. Definitions
2. General operations procedures
3. Phraseology
4. Weather information
5. Failure and emergencies
6. Radio propagation

, DEFINITIONS

• Definitions:

• Aeronautical mobile service. This is the service that you will use whenever you use your radio. It is all stations on the ground or in the air
involved in the day-to-day operations of the aircraft.

• Aeronautical station. A land station in the aeronautical mobile service. In certain instances, an aeronautical station may be located on board
ship or on a platform at sea.

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

• Altitude. The vertical distance of a level, a point or an object considered as a point, measured from mean sea level.

• Estimated time of arrival (ETA). The time at which the pilot estimates that the aircraft will be over a specified location.

• Runway visual range. The range over which the pilot of an aircraft on the center line of a runway can see the runway surface markings or the
lights delineating the runway or identify its center line

• Aerodrome traffic circuit. The specified path to be flown by aircraft operating in the vicinity of an aerodrome

• ATPL formulas – Communications VFR / IFR

• speed of light = 300000 Km/s

• wave length f C λ = (C=speed of light in m/s / f=frequency in Hertz)

• max skip distance (NM) = 1,43 H (of ionosphere in Km)

• maximum (theoretical) range (NM) = 1,25 H1 +1,25 H 2 (feet)

,LETTERS
• A- Alpha AL FAH

• B -BRAH VOH -

• C -Charlie CHAR LEE

• D- Delta DELL TAH

• E -ECK OH

• F- Foxtrot FOKS TROT

• G - GOLF -

• H- Hotel HOH TELL

• I -India IN DEE AH

• J- Juliet JEW LEE ETT –

• K -Kilo KEY LOH

• L- Lima LEE MAH

• M- Mike MIKE

• N- November NOVEMBER

• O- Oscar OSS CAR - - -

• P -Papa PAH PAH

• Q- Quebec KEE BECK -

• R -Romeo ROW ME OH

• S- Sierra SEE AIR RAH

• T -Tango TANG GO –

• U -Uniform YOUNEEFORM

• V -Victor VIK TAH

• W -Whiskey WISS KEY

• X -X-ray ECKS RAY

• Y- Yankee YANG KEY

• Z- Zulu ZOO LOO -

, Summary
NUMBERS • CATEGORIES OF MESSAGES
Numbers must also be said precisely, especially when discussing height, altitudes or flight The messages have the following order of priority:
levels.
• Any confusion could easily be deadly! • Distress. (MAYDAY) A condition of being threatened by serious and/or immine
danger and of requiring immediate assistance.
See below for the pronunciation of numbers: • Urgency. (PAN PAN) A condition concerning the safety of an aircraft etc., but
• 0 -ZERO require immediate assistance, including messages preceded by the medical tr
signal – PAN PAN MEDICAL (see Chapter 5).
• 1- WUN
• Direction Finding. Communications relating to Direction Finding.
• 2 -TOO
• Flight Safety. Messages of immediate concern to an aircraft in flight. Meteoro
• 3 -TREE advice of immediate concern to aircraft in flight or about to depart. Other me
aircraft in flight or about to depart.
• 4- FOW-ER
• Meteorological Messages. Reports, forecasts and warnings.
• 5- FIFE
• Flight Regularity. Messages regarding - operation or maintenance of facilities
• 6- SIX changes in requirements for passengers and crew non routine landings aircra
materials changes in aircraft operating schedules.
• 7 -SEVEN
• 8 -AIT
• 9- NIN-ER
• DECIMAL: DAY-SEE-MAL
• HUNDRED: HUN-DRED
• THOUSAND: TOU-SAND