feet/sec (0.96 m/s). The USAF Technical Orders indicate a glide ratio of between 19.3:1 and 19.7:1. The SGS 2-37 was marketed by the company as being suitable for the following roles: Sailplane trainer Powered aircraft trainer Glider towplane (with larger horsepower engine option) Private touring aircraft Surveillance Aerial Inspection The 2-37 was later developed into the SA 3-38, known in military service as the Schweizer RU-38 Twin Condor. Certification The SGM 2-37 was certified by the Federal Aviation Administration under type certificate G1NE on 22 March 1983. The 2-37 type certificate is currently held by K & L Soaring of Cayuta, New York. K & L Soaring now provides all parts and support for the Schweizer line of sailplanes. Reception Soaring, the journal of the Soaring Society of America, described the SGM 2-37 as: "Very versatile, very promising, very expensive". The publication's review noted that the $70,000 base price did not include a feathering propeller, gyro instruments, wheel fairings, long range fuel tanks, or other optional extras. Operational history Examples of the TG-7 were used by the US Army from 1985 on covert surveillance duties under the Grisly Hunter project. The two aircraft were then transferred to the US Coast Guard by mid 1989, were modified and were re-designated RG-8A. The aircraft were used on coastal patrols from the US Coast Guard base at Miami wearing a grey low visibility color scheme, as shown in the adjacent image taken in 1989. There were nine aircraft still registered in the US in April 2008. Current owners include the Tuskegee Airmen National Historical Museum and designer Leslie E. Schweizer. Variants SGM 2-37 Motor glider for USAF and civil use, 12 completed. SA 2-37A The SA 2-37A is a two-seat special-mission surveillance aircraft built for the Central Intelligence Agency and US Army and equipped with a Lycoming O-540-B powerplant of and first flown in 1982. The US aircraft register records six SA-2-37As, including four belonging to Vantage Aircraft Leasing. All are in the experimental exhibition category. SA 2-37B The SA 2-37B is a development of the 2-37A equipped with a Lycoming TIO-540-AB1AD powerplant of . The aircraft is optimized for covert surveillance missions and carries FLIR and electronic sensors. It has a 500 lb (231 kg) sensor payload in a fuselage bay. With a fuel capacity of it can remain on station for up to 12 hours. Gross weight is 4300 lb (1950