This Day in FAA History: June 4th

Full FAA Chronology at this link.
19690604: FAA and the Central American Corporation for Air Navigation Services (COCESNA) signed a contract under which FAA would provide technical assistance for air navigation and traffic control services to COCESNA, a five-nation governmental group whose members were Costa Rica, El Salvador, Guatemala, Honduras, and Nicaragua. FAA had traditionally provided technical assistance to Latin American countries under the sponsorship of the State Department’s Agency for International Development; however, this was the first time FAA provided such services to these countries under a direct reimbursable contract.
19710604: FAA issued the first supplemental type certificate approving installation of a nitrogen fuel-tank inerting system in a civil aircraft to protect against accidental ignition of fuel vapors. The agency installed the inerting system, developed under an FAA contract by Parker Hannifin Corporation, in a DC-9 aircraft. The type certificate applied to this specific aircraft only.
19730604: FAA published a rule requiring aircraft in designated airspace to carry an improved radar beacon transponder with Mode C automatic altitude reporting capability, as well as the ability to transmit identity codes (see June 25, 1970). The implementation schedule was: in Group I terminal control areas (TCAs), July 1, 1974; in Group II TCAs, January 1, 1975 (see April 14, 1975); and above 12,500 ft MSL, July 1, 1975. (See November 1, 1985.) Due to equipment supply problems, FAA later granted a 6-month extension of the deadlines concerning TCAs. (See January 1, 1974.)
20210604: FAA revoked Universal Flight Services’ ability to charge passengers for flights and revoked the owner’s pilot certification for conducting illegal charter flights. The company conducted 26 illegal passenger flights without a FAA certificate from October 22, 2015, to February 17, 2019. In March 2019, the Florida-based company had received the required FAA certificate to conduct passenger flights. However, between September 9, 2019, and September 20, 2020, the company operated seven flights with unauthorized pilots and/or aircraft. Additionally, all flights from October 2015 to September 2020, were flown by pilots who had not passed the required tests and checks.
20210604: FAA renewed the spaceport license for the Oklahoma Space Industry Development Authority, authorizing them to operate a launch site at Clinton-Sherman Industrial Airpark. The license had to be renewed every five years. The Authority is one of twelve FAA-licensed commercial spaceports.
20230604: A Cessna Citation entered restricted Washington, DC, airspace, leading the Air Force to scramble jets. The jets, which went supersonic, triggered a sonic boom in the region. The Cessna crashed in Virginia. Accident investigators believed pilot and passenger incapacitation may have caused the crash because of hypoxia.