European airframer Airbus built five A380’s for the initial flight test program of the world’s largest commercial passenger aircraft. It still retains two aircraft in its test fleet which are used for on-going long term testing and for making improvements on the A380. F-WWOW (MSN 1) is fitted with the Rolls Royce Trent 970 engines, while F-WWDD (MSN 4) is …

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