Nov. 10 (UPI) -- The Federal Aviation Administration on has imposed restrictions on private flights at 12 major U.S. airports, a business aviation trade group said.

The new rule -- called a Notice to Airmen, or NOTAM -- bans all non-scheduled operations at the 12 airports, which "will effectively prohibit business aviation operations," the National Business Aviation Association said in a statement Sunday. The restrictions went into effect at midnight Sunday.

The organization said the move "disproportionately" impacts private flights, "an industry that creates more than a million jobs, generates $340 billion in economic impact and supports humanitarian flights every day."

The announcement comes amid shortages in air traffic controller staffing in response to the federal government shutdown. At 41 days Monday, it's the longest government shutdown in U.S. history.

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