Upgraded versions of the T-41 with more powerful engines and more specialized equipment were based on the Cessna 175 (itself a 172 derivative), including the T-41B for the Army, T-41C for the USAF Academy, and the T-41D for the U.S. Military Aid Program.
[4][5][6] In 1968, the USAF acquired 52 of the more powerful T-41Cs, which used 210 hp (160 kW) Continental IO-360 and a fixed-pitch climb propeller, for use at the United States Air Force Academy (USAFA).
Beginning in 1993, the USAF replaced many of the T-41 fleet with the Slingsby T-3A Firefly for the flight-screening role, and for aerobatic training, which was outside the design capabilities of the T-41.
[2][7][better source needed] Four T-41s remained at the Air Force Academy for the USAFA Flying Team, as well as to support certain academic classes.
[8] A number of air forces, including Saudi Arabia and Singapore, purchased various civilian models of the Cessna 172 for use in military training, transport, and liaison roles.