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On 23 July 1955 the first prototype was flown of a two-seat basic trainer designated P.Z.L. TS-8 and later named
Bies (fiend). A cantilever low-wing monoplane with retractable tricycle landing gear, powered by a Narkiewicz WN-3 radial engine and accommodating two in tandem beneath a jettisonable transparent canopy, initial deliveries to the Polish air force began in 1958. The type established several class speed records, and that set on 20 May 1957, of 320.362km/h over a 2000km closed circuit, remained unbeaten until August 1982. This fully aerobatic trainer remained in service for some six years, initial deliveries of the TS-11 Iskra which replaced it in service in the Polish air force beginning in 1964.
 | A three-view drawing (804 x 992) |
| ENGINE | 1 x Narkiewicz WN-3 piston engine, 246kW |
| WEIGHTS |
| Take-off weight | 1600 kg | 3527 lb |
| Empty weight | 1070 kg | 2359 lb |
| DIMENSIONS |
| Wingspan | 10.5 m | 34 ft 5 in |
| Length | 8.5 m | 27 ft 11 in |
| Height | 3.3 m | 10 ft 10 in |
| Wing area | 19.1 m2 | 205.59 sq ft |
| PERFORMANCE |
| Max. speed | 312 km/h | 194 mph |
| Ceiling | 6000 m | 19700 ft |
| Range | 800 km | 497 miles |
| Kalrin, 17.05.2008 bies - name of demon from slavic mythology |
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