Complex sentence: National Airways Corporation was itself an amalgamation of Union Airways and a number of other smaller operators, and equipped with de Havilland Dragon Rapides, de Havilland Fox Moths, Douglas DC-3s, Lockheed Electras and Lockheed 14s which initially operated inside New Zealand.
Split into simpler sentences: National Airways Corporation was itself an amalgamation of Union Airways and a number of other smaller operators. At the time of its inception, it was equipped with de Havilland Dragon Rapides, de Havilland Fox Moths, Douglas DC-3s, Lockheed Electras and Lockheed 14s which initially operated inside New Zealand.