2.1: Airspace introduction

Airspace at a glance:

The Sofia FIR (LBSR) ontains mostly class G (below FL90 outside CTR/TMAs) and class C (above FL90 outside TMAs). THere are 3 major airports, along with a number of other smaller fields:

ICAO	Airport Name	CTR	TMA	Elevation
LBSF	Sofia Int’l	Sofia	Sofia	1742ft
LBWN	Varna Int’l	Varna	Varna	230ft
LBBG	Burgas Int’l	Burgas	Burgas	135ft
LBGO	Gorna	Gorna	N/A	283ft
LBPD	Plodiv	Plodiv	N/A	597ft