Letov S-18
Trainer Biplane
Photo ©: Karsten Palt
The Letov S-18 is a single-engine two-seat trainer biplane aircraft produced by the Czechoslovak manufacturer Letov.
The version S-118 was powered by a Walter NZ 85 radial engine with 85 hp (63 kW). The S-218 was a redesign with new fuselage with a steel tube frame. It was powered by a Walter NZ 120 engine with 120 hp (89 kW). Approx. 30 S-218 were also license built in Finnland. These aircraft were powered by a 145 hp (108 kW) Siemens SH 14 / Bramo 314 engine.
| Crew | 2 | |
| Propulsion | 1 Radial Engine | |
| Engine Model | Walter NZ-60 | |
| Engine Power | 44 kW | 59 hp |
| max. Cruise Speed | 106 km/h | 57 kts 66 mph |
| Speed | 141 km/h | 76 kts 87 mph |
| Service Ceiling | 3.500 m | 11.483 ft |
| Range | 324 km | 175 NM 201 mi. |
| Empty Weight | 345 kg | 761 lbs |
| max. Takeoff Weight | 550 kg | 1.213 lbs |
| Wing Span | 10,00 m | 32 ft 10 in |
| Wing Area | 16,3 m² | 175 ft² |
| Length | 6,68 m | 21 ft 11 in |
| Height | 3,10 m | 10 ft 2 in |
| First Flight | 1925 | |
| Production Status | out of production | |
| Production Range | 1926-1933 | |
| Total Production | > 115 | |
| Data for (Version) | Letov S-18 | |
| Variants | S-118, S-218 | |
| [Photo-ID: 10517] © Karsten Palt 2014-06-08 | |
 | Letov S-218 Czechoslovak Army Air Force Reg.: 10E c/n: 50 |
| Letecke Muzeum Kbely [Prague] | |