Full FAA Chronology at this link.
19600316: New requirements regarding instrument flying skills became effective. Persons receiving a commercial pilot certificate were required to have a minimum of 10 hours of instrument flight instruction and to demonstrate their ability to control their aircraft manually while relying solely on instrument guidance. Successful applicants for private pilot certificates were required to have dual instruction in the basic control of the aircraft by the use of instruments, and to demonstrate their manual capability in attitude control in simulated emergencies involving the loss of visual reference during flight. The added requirements applied only to new applicants, not holders of existing certificates.
19620316: Effective this date, FAA abolished the Office of Plans, and transferred its personnel to other FAA components (see January 15, 1959 and August 28, 1967).
19640316: A manpower study conducted by FAA revealed an approaching shortage of aircraft maintenance personnel. The