AA airlines is American airlines.
BB is Baburam Bhattarai or Bhuwan Bhatta hahaha.
It may be
Bold and Beautiful
Bhole Baba
Boom Boom

http://www.thehimalayantimes.com/fullNews.php?headline=BB+Airways+gets+ministry's+green+signal&NewsID=315097

http://www.ekantipur.com/the-kathmandu-post/2012/10/11/money/bb-airways-starts-commercial-flights/240684.html