The Dornier Do 28 & 128

Powerplants

Do 28D2 - Two 285kW (380hp) Lycoming IGSO540A1E flat six piston engines driving three blade constant speed Hartzell propellers. 1286 - Two 300kW (400shp) Pratt & Whitney Canada PT6A110 turboprops driving three blade Hartzell propellers.

Performance

Do 28D2 - Max speed 325km/h (175kt), max cruising speed 306km/h (165kt), economical cruising speed 241km/h (130kt). Initial rate of climb 1160ft/min. Service ceiling 25,200ft. Range with max payload 1050km (566nm). 1286 - Max speed 340km/h (183kt), max cruising speed 330km/h (178kt), econ cruising speed 256km/h (138kt). Initial rate of climb 1260ft/min. Service ceiling 32,600ft. Range with max fuel at econ cruising speed 1825nm (985nm), with a 805kg (1774lb) payload 1460km (788nm).

Weights

Do 28D2 - Empty 2328kg (5132lb), max takeoff 3842kg (8470lb). 1286 - Empty 2540kg (5600lb), max takeoff 4350kg (9590lb).

Dimensions

Do 28D2 - Wing span 15.55m (51ft 0in), length 11.41m (37ft 5in), height 3.90m (12ft 10in). Wing area 29.0m2 (312sq ft). 1286 - Same except for wing span 15.85m (52ft 0in).

Capacity

One or two pilots on flightdeck and seating in main cabin for 10 or 12 seats two abreast with a centre aisle.

Production

Total Do 28 and 1282 production was over 200 units including military orders, total 1286 production approximately 25.

Type

STOL utility transports

History

The Do 28 Skyservant was the second aircraft to bear the Do 28 designation, but is similar only in overall configuration to the first Do 28.

Dornier's original Do 28 first flew in 1959 and was a twin engined development of the high wing single engine Do 27 utility. The Do 28 Skyservant first flew on February 23 1966, and while it retained the earlier Do 28's high wing and unique side mounted engine configuration, was a completely new aircraft. Other design features of this unusual looking aircraft were the fixed tailwheel undercarriage, with the faired mainwheels mounted under the engines. FAA certification was granted on April 19 1968.

The Do 28 was developed into a number of progressively improved variants, from the original D, through the D1 and D2, to the 1282, introduced in 1980. Each variant introduced a number of detail changes. Most Do 28 production was for military customers, notably Germany, although a small number were delivered to commercial operators.

An initial turboprop version of the Do 28, designated the Do 28D5X, first flew in April 1978, fitted with two Avco Lycoming LTP 1016001As derated to 300kW (400shp).

However production turboprop Dornier 1286s feature Pratt & Whitney Canada PT6As, with the first such configured aircraft flying in March 1980. Only a small number were built between then and 1986, when production ceased, and again most aircraft were for military customers.

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The Dornier 228

Powerplants

100 - Two 535kW (715shp) Garrett TPE3315 turboprops driving four blade constant speed Hartzell propellers. 212 - Two 560kW (776shp) Garrett/AlliedSignal TPE3315252Ds.

Performance

100 - Max cruising speed 432km/h (233kt). Initial rate of climb 2050ft/min. Service ceiling 29,600ft. Range at max cruising speed 1730km (934nm), or 1970km (1064nm) at long range cruising speed. 212 - Max cruising speed 434km/h (234kt), cruising speed 408km/h (220kt). Initial rate of climb 1870ft. Service ceiling 28,000ft. Range with max pax and reserves at max cruising speed 1037km (560nm), range with a 775kg (1710lb) payload and reserves at long range cruising speed 2445km (1320nm).

Weights

100 - Operating empty 3235kg (7132lb), max takeoff 5700kg (12,570lb). 212 - Empty 3258kg (7183lb), operating empty 3739kg (8243lb), max takeoff 6400kg (14,110lb).

Dimensions

100 - Wing span 16.97m (55ft 7in), length 15.03m (49ft 3in), height 4.86m (15ft 9in). Wing area 32.0m2 (345sq ft). 212 - Same except for length 16.56m (54ft 4in).

Capacity

Flightcrew of two. 100 - Typical passenger seating for 15. 212 - Typical passenger seating for 19 at two abreast and 76cm (30in) pitch. 228212 based 228 Cargo has a max payload of 2340kg (5159lb). 212 based ambulance accommodates six stretchers and up to nine attendants or passengers.

Production

238 Dornier 228s of all models built, with 112 in commercial service in late 2002. Indian licence production of more than 80 228s (mostly for the Indian military).

Type

15-19 seat regional airliner and STOL utility transport

History

In terms of civil sales the 228 series was Dornier's most successful postwar design.

The Dornier 228 incorporates the fuselage cross section of the earlier Do 28 and 128 combined with an all new high technology supercritical wing and TPE331 turboprops. Two fuselage length versions, the 100 and 200, were developed concurrently, the 100 offering better range, the 200 more payload. The 100 was the first to fly taking to the skies for the first time on March 28 1981, the first 200 followed on May 9 that year. The first 228 entered service in August 1982.

Composites were used in a number of secondary structure areas on the 228 including upper wing skins, nose and tail. At one stage Dornier also planned to offer the Pratt & Whitney Canada PT6A as an optional powerplant, but this never eventuated.

228 developments include the 228-101 with reinforced structure and landing gear for higher weights, the corresponding 228-201 version of the 200, the 228-202 version built under licence production in India with HAL to meet that country's Light Transport Aircraft requirement, and the 228-212.

The 212 is the last Dornier (now Fairchild Aerospace) production aircraft, its improvements include higher operating weights, structural strengthening and a lower empty weight, improvements to enhance STOL performance and modern avionics. The last of 238 Dornier built 228s was completed in 1999. HAL licence production continues.

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