The Bulgarian Air Force facebook page announced an open house week for the air force bases, here you can see the dates and location you can find it here (from google translation):
In connection with the solemn celebration on the 16th of October – Aviation and Air Force Feast and the 106th anniversary of the first combat flight in the Air Force Airways, an Open Door Day is organized as follows:
• 09.10.2018 – 10:00 – 13:00 – Graf Ignatievo airbase;
• 11.10.2018 – 13:00 – 15:00 – airbase Dolna Mitropoliya;
• 12.10.2018 – 09:30 – 15:00 – base station Bezmer;
• 12.10.2018 – 10:00 – 14:00 – transport airbase Vrazhdebna
Static display will introduce visitors to the purpose and characteristics of aviation, aircraft and logistics equipment, weapons and special equipment for operation in the Bulgarian Air Force.
Guests will also be able to observe regular flights of the airplanes in the respective airbase according to the schedule for the month.
All permanent accredited mass media representatives are invited to the Open Doors Day.