Pilot/Controller Glossary

BROADCAST- Transmission of information for
which an acknowledgement is not expected.
(See ICAO term BROADCAST.)

BROADCAST [ICAO]- A transmission of information 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 three (3) or five (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.