Aircraft – Double X Aviation Ltd


The Harvard (T6 Texan)

The T6 Texan was an American designed two-seat general-purpose military aircraft. The Harvard was the British and Canadian designation for the North American AT-6 Texan. This family of trainers is easily the most widely built trainer of all time.

Our Harvard 7660 was shipped to New Zealand after a long service with the South African Air Force (SAAF). South Africa was the last air force to use the Harvard after 55 years service, from 1940-1995. They are still regarded as National Treasues in South Africa, and a notice to this effect was published recently in the South Africa Government Gazette, stating “The National Monuments Commission hereby declares Harvard aircraft to be cultural treasures on account of the historical and technical importance thereof …”


One of the Eastern Block most successful aircraft designs, the Delfin saw widespread use in the Soviet Union as the Warsaw Pact’s primary advanced trainer and light Attack for more than a decade in the early 1960s and 1970s. Early design studies for a two-seat jet trainer were conducted by K Tomas and
Z Rubic in 1955. Features of the resulting L-29 Delfin include its design concept of simplicity. Examples of this include easy construction and maintenance and docile handling capabilities. Other design features are typical for jets of the era, including a small turbojet engine, straight wing, tandem seating, and lightweight ejection seats. Unlike many of its contemporaries and later jets, the L-29 features a T tail and can operate from grass, waterlogged, and dirt strips. The first XL-29 prototype was powered by a Bristol Siddeley Viper engine and flew for the first time on April 5, 1960 powered by the indigenously developed M 701 turbojet. The following year the Delfin was pitted against the Yak-30 and PZL Mielec TS-11 Iskra in a competitive fly-off. The result of that competition saw the Delfin equip every Warsaw Pact nation except for Poland, which chose to stay with the Iskra. The Soviet Union alone took over 2,000 Delfins, while significant numbers also served in Czechoslovakia, East Germany, and Hungary. In these countries the Delfin was used in all-through training from ab iniito to advanced stages. The first Delfins were delivered in 1963, the last of over 3,600 rolled off the production line in 1974. Almost all production was of the basic aircraft variant (codename Maya), although two other variants did appear. Small numbers of a single seat L-29A Delfin Akrobats were built for aerobatics while a prototype L-29R dedicated attack aircraft was also built. Total L-29 production was 3,000.

Specifications (L-29)

General characteristics

  • Crew: 2: Pilot or student and instructor
  • Length: 10.81 m (35 ft 6 in)
  • Wingspan: 10.29 m (33 ft 9 in)
  • Height: 3.13 m (10 ft 3 in)
  • Wing area: 19.8 m² (213 ft²)
  • Empty weight: 2,280 kg (5,030 lb)
  • Loaded weight: 3,286 kg (7,244 lb)
  • Max takeoff weight: 3,540 kg (7,800 lb)
  • Powerplant: 1× Motorlet M-701C , 8.7 kN (1,960 lbs)


  • Maximum speed: 820 km/h (443 knots, 510 mph)
  • Range: 900 km (486 nm, 560 mi)
  • Service ceiling: 11,500 m (37,700 ft)
  • Rate of climb: 14 m/s (2,800 ft/min)
  • Wing loading: 166 kg/m² (34.3 lb/ft²)
  • Thrust/weight: 0.25


200 kg (440 lb) of various guns, bombs, rockets, and missiles on external hardpoints