The easiest way to spot the Airbus 300, 310, 319 and 320 series aircraft is to look at the wing tips. These airbuses have the little tail fins that sit both above and below the wing tips, whereas the various Boeing jets just have upward sloping wing tip fins. The larger Airbuses -- 330 and 340 -- are also easy to differentiate. The 340 has four engines and looks like a Boeing 707 on steroids, while the 330 appears plumper than the 767. Is that of any help?