Premise: Bahir Dar Airport (IATA: BJR, ICAO: HABD) , also known as Ginbot Haya Airport, is an airport serving Bahir Dar, the capital city of the Amhara Region in Ethiopia. The name of the city and airport may also be transliterated as Bahar Dar. The airport is located 8 km west of Bahir Dar, near Lake Tana.The airport also serves the Ethiopian Air Force.
Hypothesis: Bahir Dar Airport when serves air force does't allow commercial aeroplanes.