Differences between A320's

From:         ditka!sgiblab!uunet.UU.NET!ucsd!frosty.rational.com!pete (Pete Coe)
Organization: Rational
Date:         21 Sep 93 22:47:43 PDT
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Taxi-ing around Heathrow yesterday I noticed a minor difference the 
British Airways and Air France A320's.  The Air France ones (and the
Lufthansa ones for that matter), all had small winglets on the wings.  
The British Airways planes did not.  My first thought was that I had 
misidentified the BA planes, and they were really 737-400's, but no
another look confirmed they were A320's.

Any thoughts?

-- Pete Coe
-- Rational
-- Object-Oriented Products