Bulgarian Air Traffic Services Authority (BULATSA) notifies aircraft operators
and users of the Bulgarian airspace regarding the publication
of the sixth edition of Aeronautical chart 1:500 000.

"Air Traffic Control" is a combination of airborne
and ground to ensure safety and efficient
movement of aircraft during
all phases of flight.

BULATSA offers internet based service - WebFPL to fill
and sending flight plans for VFR operations over the Internet.