PPRuNe Forums - View Single Post - Airbus questions that I cannot resolve!!!!!
Old 15th Nov 2019, 17:54
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tcasblue
 
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Is it possible that it is a software(as mentioned by other posters) that has had an update but not all aircraft have been updated. Are the software updates mandatory installation of an option to purchase with some airlines deciding not to update in order to save money.
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