TASK DEFINITION: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
PROBLEM: The Multi Crew Coordination or Multi Crew Co-operation ( MCC ) is an allowance , an additional training at the commercial pilot licence required in order to fly within a crew , that means in a multi-pilot aircraft with the aircrew consisting of at least two members .

SOLUTION: The Multi Crew Coordination ( MCC ) is a training in addition to the commercial pilot licence required to fly with a crew , in a more than one pilot aircraft .

PROBLEM: The thirteenth court of appeals is the United States Court of Appeals for the Federal Circuit , which has nationwide jurisdiction over certain appeals based on their subject matter .

SOLUTION: The thirteenth court of appeals is the United States Court of Appeals for the Federal Circuit .

PROBLEM: The United States Capitol , often called the Capitol Building , is the home of the United States Congress and the seat of the legislative branch of the U.S. federal government .

SOLUTION:
The United States Capitol is the building where the United States Congress meets .