PORTMOAK HERITAGE COLLECTION
Slingsby T50 Skylark 4 BSR
No C of A at the moment
BGA Number 1202
Trigraph BSR
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General characteristics
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Crew: 1
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Length: 25 ft 0 in (7.62 m)
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Wingspan: 59 ft 9 in (18.2 m)
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Height: 3 ft 5 in (1.04 m) at cockpit
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Wing area: 173.0 sq ft (16.07 m2)
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Aspect ratio: 20.5
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Airfoil: NACA 633-620 inboard and NACA 6415 at tips
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Empty weight: 569 lb (258 kg)
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Max weight: 829 lb (376 kg)
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Max weight 880 lb (399 kg) Non-aerobatic (BGA concession TNS 09/70)
Performance
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Stall speed: 32 kn (37 mph, 60 km/h)
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Never exceed speed, Vne: 123 kn (142 mph, 228 km/h)
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Rough air speed max: 76 kn (87.5 mph; 140.8 km/h)
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Aerotow speed: 76 kn (87.5 mph; 140.8 km/h)
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Winch launch speed: 76 kn (87.5 mph; 140.8 km/h)
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Airbrakes open: 123 kn
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g limits: +4, 0 at 120 kn (138.1 mph; 222.2 km/h)
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Rate of sink: 104 ft/min (0.53 m/s) at 37.25 kn (42.9 mph; 69.0 km/h)
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Lift-to-drag: 36 at 41 kn (47.2 mph; 75.9 km/h)
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Wing loading: 4.78 lb/sq ft (23.35 kg/m2)
Placard
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Non Aerobatic
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Max solo weight 115 kg (17st 13lb)
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Min solo weight 75 kg (11st 11lb)
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weighed on 10/11/2019
data from BGA TCDS 6/11/2001