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Pilot/Controller Glossary 

6/17/21 

BROADCAST

  Transmission of information for 

which an acknowledgement is not expected. 

(See ICAO term BROADCAST.) 

BROADCAST [ICAO]

 A transmission of informa-

tion relating to air navigation that is not addressed to 
a specific station or stations. 

BUFFER AREA

 As applied to an MVA or MIA 

chart, a depicted 3 NM or 5 NM radius MVA/MIA 
sector isolating a displayed obstacle for which the 
sector is established. A portion of a buffer area can 
also be inclusive of a MVA/MIA sector polygon 
boundary. 

PCG B