On 31 August 2018, while performing flight from Baku (Azerbaijan) without PAX on board, a Cessna 680 with registration TC-OYD of BOYDAK HAVACILIK A.S operator, was executing a RNAV approach to runway 04 of Burgas airport (Bulgaria). At approx. 10:34 UTC during the rollout a few seconds after the touchdown, the aircraft veered to the right from the centerline, left the runway nearby the C taxiway, hit a concrete block with aeronautical equipment and stopped on the ground between the apron and the runway.
The flight crewmembers were not injured, but the aircraft received damages on the left nose part of the fuselage and the left brace strut of the nose gear was broken.
On May 22, 2021, the Airbus 320-214 aircraft, registration marks LZ-FBC, operated by Bulgaria Air performing flight FB8509 from LBSF Sofia (Bulgaria) to Sharm el Sheikh (Egypt) with 139 people on board. During the climb out phase shortly after take-off, approximately 10 min after lift-off at FL225 an engine No 1 was shut down. The flight crew declared PAN PAN and returned to Sofia for a safe landing on runway 27. There were no consequences for the flight crew and the passengers.
On August 5, 2020, the A320-232 aircraft, registration marks HA-LWH, operated by „ Wizz Air Hungary Ltd“ was preparing for performing the flight from Sofia (LBSF) to Dortmund (EDLW). During the final phase of Ground Services performed by Ground Handling Operator of “Gold Air Handling”, after the passenger embarkation on board, the driver of a self-propelled passenger stairs started for moving out from the aircraft.
After leaving, the aircraft stand the self-propelled passenger stairs while manoeuvring around the aircraft, hit the left wing of the aircraft about 0,5-0,6 m of the wingtip.
The damage to the left wing of the aircraft did not allow the flight to be performed. There were no consequences for the flight crew, the passengers and the ground handling crew. The flight was cancelled and the passengers were returned to the terminal.
On 26 February 2018, under the conditions of low temperatures and snowfall and after of more than 6 hours stay on the apron and consecutive de-icing procedures performed, the speed indicators of three separate aircraft of A321-231 type of Wizz Air operator appeared to show wide range unreliable values and variations. Due to the reason, two of the aircraft landed by force at Budapest Airport and the third one (reg. marks HA-LXL) terminated its take off from Sofia Airport at initial stage.