Balkan Bulgarian Airlines Tupolev Tu-134A-3 LZ-TUM (msn 3351906) ZRH (Rolf Wallner). Image: 937339. Copyright Photo: Balkan Bulgarian Airlines Tupolev Tu-134A-3 LZ-TUM (msn 3351906) ZRH (Rolf Wallner). Image: 937339. Share this:EmailFacebookLinkedInTwitterPocketRedditTumblrPinterestLike this:Like Loading...