Radio Communication Phraseology and Techniques -Cont.

CHAPTER EIGHT

INSTRUMENT FLIGHT RULES WORKBOOK

9. Speeds are stated in separate digits followed by the word "knots." (The controller may

omit the word "knots" when using speed adjustment procedures, "Reduce/increase speed to ONE

FIVE ZERO.") Example:

250 --- TWO FIVE ZERO KNOTS

10. The phonetic alphabet (listed in section A of the IFR Supplement) should be used by pilots

when identifying their aircraft during initial contact with air traffic control facilities.

Additionally, use the phonetic equivalents for single letters and to spell out groups of letters or

difficult words during adverse communications conditions. Example:

FIVE --- FOXTROT INDIA VICTOR ECHO

11. The following are ground station voice calls used during most IFR flights:

"(NAME) GROUND"

-Airport Ground Control

"(NAME) CLEARANCE DELIVERY" -Airport Clearance Delivery

"(NAME) TOWER"

-Airport Control Tower

"(NAME) RADIO"

-Flight Service Station

"(NAME) METRO"

-Military Weather Service (PMSV)

"(NAME) DEPARTURE"

-ATC Departure Control

"(NAME) CENTER"

-Air Route Traffic Control Center

"(NAME) APPROACH"

-ATC Approach Control

"(NAME) G-C-A"

-Radar Ground Controlled Approach Facility at

named airport (for PAR or ASR approaches)

12. Common words and phrases which are used to terminate transmissions are:

ACKNOWLEDGE - Let me know that you have received and understand this

message.

Words to acknowledge a message:

AFFIRMATIVE - Yes

NEGATIVE -

ROGER -

I have received all of your last transmission (acknowledgment of

reception only).

WILCO -

I have received your message, understand it and will comply.

VERIFY -

Request confirmation of information; e.g., "Verify assigned

heading of 150."

READ BACK - Read all of this message back to me (verbatim).

GO AHEAD -

Proceed with your message.

SAY AGAIN - Request a repeat of the last transmission (the term "Repeat" is

gunfire control talk for send another salvo and therefore not used).

8-6 INTRODUCTION TO GROUND, AIRBORNE, LOST COMMUNICATION, AND

EMERGENCY VOICE PROCEDURES