US military designation (Series 200): C-41A

TYPE: Twin-turboprop transport.

PROGRAMME: Design studies for C-212 began 1964; design accepted by Spanish Air Force 1967; two prototypes (plus one static test) ordered 24 September 1968; first flights 26 March and 23 October 1971. Series 100 and 200 no longer produced, but four Series 200 in service with US Special Operations Forces belatedly allocated C-41A designation in 2002. Series certified to FAR Pts 25, 121 and 135 in December 1987 but no longer offered; replaced by Series 400 from 1998. Former name Aviocar now discontinued.

CURRENT VERSIONS: 100: Initial version; 158 built (CASA two prototypes plus 128, IPTN 28 from Spanish CKD kits).
200: Succeeded Srs 100 from 1980; 151 built by CASA. Final examples produced in Indonesia by Dirgantara.
300: Differed from Series 200 in having winglets to improve climb performance; enlarged nose for increased payload; and enhanced cruise performance; 52 built.
400: Initiated mid-1995, but not formally launched until June 1997 (Paris Air Show), following first flight (EC-212) on 4 April that year. EFIS and re-rated TPE331-12JR engines maintaining T-O power under hot/high conditions without APR; increased maximum payload; other improvements as detailed under Design Features below. Spanish type certificate 30 March 1998. Available in configurations described below.
400 Airliner: Standard seating for 26 passengers, or 24 if lavatory included.
Detailed description applies to 400 Airliner except where indicated.
400 Utility: Standard seating for 23 passengers, or 21 if lavatory included, with maximum capacity for 26.
400M: Military troop/cargo/general purpose transport.
Patrullero: Special missions (anti-submarine and maritime patrol) versions; described separately.

CUSTOMERS: Total 474 of all versions sold by June 2003; total includes Series 200s still to be completed by Dirgantara of Indonesia. C-212s of all Series have been purchased or leased by over 40 military and 50 civil operators in 38 countries and had accumulated over 2.5 million hours by 1999.

DESIGN FEATURES: Typical high-wing, rear-loading military transport.
Wing section NACA 653-218; no dihedral; incidence 2°30'; swept winglets canted upwards at 45°; meets FAR Pt 36 noise limits.
Series 400 features engine change (see Power Plant); avionics upgrade; underfloor avionics boxes relocated to former nose baggage compartment, facilitating ventral installation of a 360° scan radar and eliminating need for special-shape 'platypus' nose of earlier Patrullero versions, which allowed only 270° scan; relocated pressure refuelling point; main cabin refurbished; cargo winch option.

FLYING CONTROLS: Conventional and manual. Trim tab in port aileron; trim and geared tabs in rudder and each elevator; double-slotted flaps.

STRUCTURE: All-metal light alloy fail-safe structure; unpressurised; two-spar tailplane and fin. Wing centre-section, forward and rear passenger doors and dorsal fin manufactured by AISA.

LANDING GEAR: Non-retractable tricycle type, with single mainwheels and single steerable nosewheel, CASA oleo-pneumatic shock-absorbers. Goodyear wheels and tyres, main 11.00-12 (10 ply), nose 24x7.7 (8 ply). Tyre pressure 3.86 bar (56 lb/sq in) on main units, 4.14 bar (60 lb/sq in) on nose unit. Goodyear hydraulic disc brakes on mainwheels. No brake cooling. Anti-skid system optional.

POWER PLANT: Two 690 kW (925 shp) Honeywell TPE331-12JR-701C engines. Dowly Aerospace R-334/4-82-F/13 four-blade, constant-speed, fully feathering, reversible-pitch propellers.
Fuel in four integral wing tanks, with total capacity of 2,040 litres (539 US gallons; 449 Imp gallons), of which 2,000 litres (528 US gallons; 440 Imp gallons) usable. Gravity refuelling point above each tank. Single pressure refuelling point in starboard mainwheel fairing. Additional fuel can be carried in one 1,000 litre or two 750 litre (264 or 198 US gallon; 220 or 165 Imp gallon) optional ferry tanks inside cabin, and/or two 500 litre (132 US gallon; 110 Imp gallon) auxiliary underwing tanks. Oil capacity 4.5 litres (1.2 US gallons; 1.0 Imp gallon) per engine.

ACCOMMODATION: Crew of two on flight deck; cabin attendant in civil version. Ergonomically redesigned flight deck; improved cabin soundproofing, sidewall design, lighting and toilet; 400M, foldaway seats along each side of cabin.
For troop transport role, main cabin can be fitted with 25 inward-facing seats along cabin walls, to accommodate 24 paratroops with instructor/jumpmaster; or 25 fully equipped troops. As ambulance, cabin is normally equipped to carry 12 stretcher patients and four medical attendants. As freighter, up to 2,950 kg (6,504 lb) of cargo can be carried in main cabin, including two LD1, LD727/DC-8 or three LD3 containers, or light vehicles. Cargo system, certificated to FAR Pt 25, includes roller loading/unloading system and 9 g barrier net. Photographic version equipped with two RC-20/30 vertical cameras and darkroom. Navigation training version has individual desks/consoles for instructor and five pupils, in two rows, with appropriate instrument installations.
Civil passenger transport version has standard seating for up to 26 in mainly three-abreast layout at 72 cm (28.5 in) pitch, with provision for quick change to all-cargo or mixed passenger/cargo interior. Lavatory, galley and 400 kg (882 lb) capacity baggage compartment standard, plus additional 150 kg (330 lb) in nose bay. VIP transport version can be furnished to customer's requirements.
Forward/outward-opening door on port side immediately aft of flight deck; forward/outward-opening passenger door on port side aft of wing; inward-opening emergency exit opposite each door on starboard side. Additional emergency exit in roof of forward main cabin. Two-section underfuselage loading ramp/door aft of main cabin can be opened in flight for discharge of paratroops or cargo, and can be fitted with optional external wheels for door protection during ground manoeuvring. Interior of rear-loading door can be used for additional baggage stowage in civil version. Entire accommodation heated and ventilated; air conditioning optional.

SYSTEMS: Freon cycle or (on special mission versions) engine bleed air air conditioning system optional. Hydraulic system, operating at service pressure of 138 bar (2,000 lb/sq in), provides power via electric pump to actuate mainwheel brakes, flaps, nosewheel steering and rear cargo ramp/door. Hand pump for standby hydraulic power in case of electrical failure or other emergency. Electrical system supplied by two 9 kW starter/generators, three batteries and three static converters. Pneumatic boot and engine bleed air de-icing of wing and tail unit leading-edges; electric de-icing of propellers and windscreens. Oxygen system for crew (including cabin attendant); two portable oxygen cylinders for passenger supply. Engine and cabin fire protection systems.

AVIONICS: Comms: Rockwell Collins VHF, ATC transponder, intercom and PA system standard; ELT; Rockwell Collins HF, UHF and second transponder, and Fairchild CVR optional.
Radar: Honeywell weather radar standard. RDR-1500B search radar in ventral radome on Patrullero versions.
Flight: Rockwell Collins VOR/ILS, ADF, DME and radio altimeter, and Honeywell AFCS and directional gyro, standard; second Rockwell Collins ADF, Global Omega nav, Dorne & Margolin marker beacon receiver and Fairchild flight data recorder optional. Flight management system (FMS) incorporates VOR, ADF, DME and GPS nav receiver.
Instrumentation: EFIS with four CRTs; IEDS (integrated engine data system) with two colour LCDs. Blind-flying instrumentation standard.

EQUIPMENT: 1,000 kg (2,205 lb) capacity cargo winch optional.

ARMAMENT (military versions, optional): Two machine gun pods or two rocket launchers, or one launcher and one gun pod, on hardpoints on fuselage sides (capacity 250 kg; 551 lb each).