From a New York Times obit by Richard Goldstein headlined “Ken Mattingly, Astronaut Scrubbed From Apollo 13, Is Dead at 87”:

Ken Mattingly, who orbited the moon and commanded a pair of NASA shuttle missions, but who was remembered as well for the flight he didn’t make — the near-disastrous mission of Apollo 13 — died in Arlington, Va.

Mr. Mattingly, a former Navy jet pilot with a degree in aeronautical engineering, joined NASA in 1966. But his first spaceflight didn’t come until April 1972, when the space agency launched Apollo 16, the next-to-last manned mission to the moon.