11 ( BA11 ) is one of the most important military airbases in Portugal , northwest of Beja , north of the Algarve . 11 ( BA11 ) is one of the most important military airbases in Portugal , northwest of Beja , north of Algarve .
11 (BA11) merupakan salah satu pangkalan udara tentera yang paling penting di Portugal, barat laut Beja, utara Algarve. 11 (BA11) merupakan salah satu pangkalan udara tentera yang paling penting di Portugal, barat laut Beja, utara Algarve.