Musical composer, Milt Franklyn died in the middle of production on this cartoon, so the musical score was completed by William Lava, he became the studio's new musical score director. The scene where Sylvester tries to capture Tweety with a net is where the Lava music starts.
This is the only way to fly.
Blackbird: And all this time, I've been doing it the hard way.
The pilot's terminology that Tweety uses throughout the cartoon (e.g. when he is reading from the "instruction manual" is more appropriate for propeller - driven aircraft than jets.