James R. Durfee, Aviation Accident Report: Southeast Airlines Flight 308… (1959)
“ He held a currently effective airman certificate with a commercial pilot rating for single- and multiengine land aircraft, and an instrument rating. Mr. Irwin had a total of 2,367 flying hours, of which 432 were in DC-3 equipment. He had a total of 202 hours of instrument time, 26 hours of which had been accumulated in the preceding 90 days. ”
