ELMWOOD CA-05 CHRISTAVIA Mk I

The prototype Christavia Mk I (C-GENC) first flew on 3 October 1981. Elmwood Aviation is offering plans, and considers the aircraft suitable for the type of flying carried out by professional organisations like Mission Aviation Fellowship. More than 300 Christavia Mk Is are believed to be under construction; about 40 have flown. Those under construction include several for the mission field.

TYPE: Tandem two-seat homebuilt.

AIRFRAME: Braced two-spar wing structure of Sitka spruce, with truss ribs and Dacron covering. Aluminium can be used alternatively to fabricate spars and ribs. Computer designed wing section. Frise ailerons of wooden construction with Dacron covering. Fuselage of welded 4130 and 1025 steel tube, Dacron covered. Wire-braced tail unit of steel tube, with mild steel plate ribs, Dacron covered. Non-retractable tailwheel landing gear. Optional floats or skis.

POWER PLANT: Prototype has a 48.5 kW (65 hp) Teledyne Continental A65. Engines of 37.25 to 112 kW (50 to 150 hp) can be fitted. Main fuel tank, capacity 57 litres (15 US gallons; 12.5 Imp gallons), in fuselage aft of firewall; auxiliary tank, capacity 23 litres (6 US gallons; 5 Imp gallons), in each wing.

DIMENSIONS, EXTERNAL:

  • Wing span: 9.91 m (32 ft 6 in)
  • Length overall: 6.30 m (20 ft 8 in)
  • Height overall: 2.13 m (7 ft 0 in)
  • Propeller diameter: 1.83 m (6 ft 0 in)

AREA:

  • Wings, gross: 13.59 m² (146.25 sq ft)

WEIGHTS (48.5 kW; 65 hp engine, 15 US gallons fuel):

  • Weight empty: 338 kg (745 lb)
  • Max T-O weight: 590 kg (1,300 lb)

PERFORMANCE (at max T-O weight, engine and fuel as above):

  • Max level speed at S/L: 104 knots (193 km/h; 120 mph)
  • Cruising speed at 610 m (2,000 ft), 45% power: 74 knots (137 km/h; 85 mph)
  • Stalling speed: power off: 37 knots (68 km/h; 42 mph)
    • power on: 31 knots (57 km/h; 35 mph)
  • Rate of climb at S/L: 259 m (850 ft)/min
  • Service ceiling: 3,960 m (13,000 ft)
  • T-O run: 107 m (350 ft)
  • Landing from 15 m (50 ft): 198 m (650 ft)
  • Range with standard fuel, 45% power: 382 nm (708 km; 440 miles)
  • g limits: +4.5/-2.8

The article appears in the following publication:
Jane's All the World's Aircraft 1991-92. Jane's Information Group Ltd. 1991. ISBN: 0-7106-0965-5

***