Complex sentence: The landing gear consists of a monowheel, fitted with a drum brake and manually retractable into the fuselage where it is enclosed above two doors, assisted by a fixed tailwheel.
Split into simpler sentences: The landing gear consists of a monowheel, manually retractable into the fuselage, enclosed by two doors. The monowheel is fitted with a drum brake and is assisted by a fixed tailwheel.