Complex sentence: The airline used DC-3-202 airplanes in the early years for their flights later in the early 1980's (1984) begain use of DC-3 A, B and C's (C-47).
Split into simpler sentences: The airline used DC-3-202 airplanes in the early years for their flights. Around 1984, they began using the DC-3 A, B and C's (C-47).