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Ground Shift Mechanism

Mechanically Operated Items:
1. Operates landing lever and retract latch.
2. Prevents inboard spoiler extension in flight.
3. Makes inboard spoiler extension possible on the ground.
4. Automatically operates the spoiler control handle if armed.
5. Prevents applying reverse thrust to engine one and four in flight.

Electrically Operated Items:
1. Affects pressurization system.
2. Affects Freon system. 
3. Affects recirculating fan control valve.
4. Affects generator overload. 
5. Affects take-off warning horn.
(OVER)