This was a non-standard procedure , and shortly afterward he also retracted the leading - edge droops .
In December 1968 , the captain of a Trident 1C departing Paris - Orly Airport for London tried to improve climb performance by retracting the flaps shortly after take - off .
This was a non-standard Trident , and shortly afterward captain also retracted the leading - edge droops .
In December 1968 , the captain of a Trident 1C departing Paris - Orly Airport for London tried to improve climb performance by retracting the flaps shortly after take - off .