+**Dc9** refers to the [McDonnell Douglas](/wiki/McDonnell_Douglas) DC-9, a twin-engine, short-range [jetliner](/wiki/jetliner) designed for frequent, shorter flights. Its robust design and efficiency made it a workhorse for airlines worldwide for decades.
+## See also
+- [Aviation](/wiki/aviation)
+- [Aircraft](/wiki/aircraft)
+- [Airliner](/wiki/airliner)
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