British Aircraft Corporation BAC.111

For a description of the format and data included in Production Tables, see here.

Contents

Type Description

• Series 200
• Initial production version; it featured a circular-section all-metal pressurised semi-monocoque fuselage, comprising frames and stringers supporting a stressed skin, and built in three sections - front, centre and rear. The rear fuselage, with engine mounting frames and fin frames, was built as one unit, with the tailplane mounted on top of the fin. the centre fuselage incorporated a torque box to which the wings were attached. The low-set swept wings were of three-spar configuration, with integrally machined stringers, and incorporated Fowler type trailing-edge flaps, and airbrakes/spoilers on the wing upper surface, forward of the flaps. The T-tail included a variable-incidence tailplane, and the landing gear, of hydraulically retractable tricycle type, had twin wheels on each unit. Accommodation was provided for a maximum of 79 passengers in five-abreast high-density seating, and in addition to a conventionally placed passenger door at the forward end of the cabin on the port side, the aircraft had also a ventral airstair below the tail unit, giving access to or from the aft end of the cabin. Two 10,410 lb.s.t. Rolls-Royce Spey Mk.506 powerplants, except the first two aircraft, which utilsed the Spey Mk.505-14 and Rolls-Royce Spey Mk.511-14 powerplants used on the two aircraft for Zambia Airways Series 207s.

Series 200 Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
88 ft 6 in	93 ft 6 in	24 ft 6 in	980 sq ft	46312 lb	78500 lb	548 mph/ 476 kn		720 mi	35000 ft
26.97 m	28.5 m	7.47 m	91.04 m2	21007 kg	35607 kg	882 kph		1159 km	10668 m

• Series 217
• Version of the Series 200 for the RAAF, with low-pressure tyres, a navigator's station and a sextant hatch in the cockpit ceiling. Two 11,400 lb.s.t. Rolls-Royce Spey Mk.511-14 powerplants.

• Series 300
• Series 200 with 11,400 lb.s.t. Rolls-Royce Spey Mk.511 powerplants.

• Series 400
• Series 300 with American instrumentation.

• Series 475
• Series 400 fuselage with series 500 wing, plus rough field landing gear. 12,550 lb.s.t. Rolls-Royce Spey Mk.521 powerplants.

• Series 500
• Series 400 with longer fuselage with up to 119 seats, and greater wing span. 12.000 lb.s.t. Rolls-Royce Spey Mk.512 powerplants.

Series 500 Specification
Span	Length	Height	Wing Area	Empty Wt	Max AUW	Cruise Speed	Maximum Speed	Range	Service Ceiling
93 ft 6 in	10 ft	24 ft 6 in	1031 sq ft	54582 lb	104500 lb	541 mph/ 470 kn		1482 mi	35000 ft
28.5 m	3.05 m	7.47 m	95.78 m2	24758 kg	47400 kg	871 kph		2385 km	10668 m

• Series 500ED
• This model varied significantly from other One-Elevens, at BEA's request. The One-Eleven 510ED had a modified cockpit which incorporated instrumentation and avionics from or similar to that of the Hawker Siddeley Trident, for better commonality with the type. Their additional equipment included a more sophisticated autopilot, which allowed autoland in CAT II and included an autothrottle. The modifications went as far as reversing the "on" position of most switches to match that of the Trident.

• Series 670
• Series 475 with improved aerodynamics and reduced noise.

Projected Variants

Series 600 Mk.1 Series 500 with longer fuselage, greater wing span and revised fin of new design.

Series 600 Mk.2 Series 500 with longer fuselage (lbut ess than Mk.1) and revised fin.

Series 700 Combined the longer fuselage of the series 600 with a 134-seat interior, an updated series 500 wing and tailplane and the projected 16,900 lb.s.t. Rolls-Royce Spey 606 .

Series 800 Similar to Series 600 Mk.1 but with even longer fuselage seating 144–161 passengers, wider wing centre section and larger fin. Snecma/GE CFM 56 powerplants.

Super One-Eleven Scaled-up One-Eleven with a six-abreast fuselage. Two Rolls-Royce Conway powerplants. Evolved into the Two-Eleven.

X-Eleven Scaled-up One-Eleven with a six-abreast fuselage. Passenger accommodation ranged from 166 in a tourist-class layout, through 152 in all-economy, to 137 in a mixed-class configuration. The existing flight deck would be blended into the new fuselage, while new root sections would increase the area of the vertical and horizontal tail surfaces. It was predicted that the majority of routes operated would be around 500nm, although a maximum range of 2,000nm was possible. Two CFM56 or Pratt & Whitney JT10D powerplants of 22,000 lb thrust.

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Production Summary

Production References

1. BAC One-Eleven The Whole Story, Stephen Skinner (Tempus Publishing, 2002)
2. BAC 111, Malcolm Hill (The Crowood Press, 1999)
3. http://www.bac1-11jet.co.uk/