Full FAA Chronology at this link.
19520305: CAA commissioned the Norfolk air route traffic control center.
19620305: In Griggs v. Allegheny County, the U. S. Supreme Court held that noise from low-flying aircraft had interfered with the use and enjoyment of Grigg’s residential property near a runway to such an extent as to constitute a “taking” of an air easement for which compensation must be made. In Causby v. United States (see May 27, 1946), the Court had ruled that such an easement had been taken by the Federal government, which was the owner/operator of the aircraft in that case. In Griggs, however, the Court asserted that Allegheny County, Pa., as the “the promoter, owner, and lessor of the airport” took the air easement. The Court absolved the airlines and the Federal government of any taking, stating that it was Allegheny County that decided, subject to Civil Aeronautics Administration approval, “where the airport would be built, what runways it would need, their direction and length, and what land and navigation easements would be needed.”