Gourdou-Leseurre GL-812 HY

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812 HY
Role reconnaissance floatplane
Manufacturer Gourdou-Leseurre
Introduction 23 September 1930
Retired 1940

The Gourdou-Leseurre GL-812 HY was a 3-seat reconnaissance floatplane, built by Gourdou-Leseurre.


The prototype, called L-2, was built in 1926-27. It has a steel tube fuselage, and rectangular wooden wing. The tail was two fins, one above and one below the fuselage. The entire plane was fabric covered, except the 283 kW (380 hp) Jupiter engine was left uncowled. The prototype was flown to Copenhagen, and demonstrated to several countries.

Six prototype L-3s were constructed. They had a larger 313 kW (420 hp) Jupiter, steel spars instead of wood, and stronger struts. This allowed for shipboard catapult launching. After successfully testing the L-3, the French navy ordered 14 aircraft, to be called GL-810 HY. The first production 810 HY flew on 23 September 1930, taking off from the Seine at Les Mureaux.

In 1931, 20 GL-811 HYs were ordered, and operated from the seaplane carrier Commandant Teste.

In 1933-34 29 GL-812 HYs and 13 GL-813 HYs were ordered.


Gourdou-Leseurre L-2
The initial prototype of the catapult launched floatplane observation aircraft.
Gourdou-Leseurre L-3
Six prototype development aircraft with revised structure.
Gourdou-Leseurre GL-810 HY
Initial production - 14 produced for Aeronautique Navale
Gourdou-Leseurre GL-811 HY
Developed version - 20 built from 1931
Gourdou-Leseurre GL-812 HY
29 built 1933-34
Gourdou-Leseurre GL-813 HY
13 built



Units using this aircraft[edit]

  • Escadrille 7S2 (Commandant Teste)
  • Escadrille 7S3 (spread among various cruisers)
  • Escadrilles 1S1, 2S1, 2S4, 3S1, 3S2, 3S3, 3S6, 8S2, 8S5.

While most planes had been retired by 1939, that August the remaining planes were brought together to re-equip the recently re-activated and mobilized Escadrilles 1S2 and 3S3 at Cherbourg and Berre, respectively. These units performed coastal anti-submarine patrols.

Specifications (812 HY)[edit]

Data from Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Prospero Books. p. 463. ISBN 1-85605-375-X. 

General characteristics

  • Crew: 3 (pilot, observer, gunner)
  • Length: 10.49 m (34 ft 5 in)
  • Wingspan: 16 m (52 ft 6 in)
  • Height: 3.86 m (12 ft 8 in)
  • Wing area: 41.00 m2 (441.33 ft2)
  • Empty weight: 1690 kg (3726 lb)
  • Gross weight: 2460 kg (5423 lb)
  • Powerplant: 1 × uncowled Gnome-Rhone 9Ady Jupiter 9-cylinder radial piston, 313 kW (420 hp)


  • Maximum speed: 200 km/h (124 mph)
  • Range: 560 km (348 miles)
  • Service ceiling: 6000 m (19685 ft)

See also[edit]

Related lists


  • Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Prospero Books. p. 463. ISBN 1-85605-375-X.