Morane-Saulnier AI

The Morane-Saulnier AI (also Type AI) was a French parasol-wing fighter aircraft produced by Morane-Saulnier during World War I.

Morane-Saulnier AI
Class Aircraft
Type Fighter
Manufacturer Morane-Saulnier
Origin France
Country Name Origin Year
France 1917
Country Name Operational Year Retirement Year
Belgium View
France View
Japan View
Peru View
Russia (USSR) View
Switzerland View
United States of America View
ManufacturerName Production From Production To Quantity
Morane-Saulnier 1210 View

The AI was developed to replace the obsolete Morane-Saulnier Type N. Its engine was mounted in a circular open-front cowling. The parasol wing was swept back. The spars and ribs of the circular section fuselage were wood, wire-braced and covered in fabric. The production aircraft were given service designations based on whether they had 1 gun (designated MoS 27) or 2 guns (designated MoS 29).


  • MoS 27 Production fighter variant with one 0.303in (7.7mm) Vickers machine gun and powered by a Gnome Monosoupape 9NI rotary engine.
  • MoS 29 Production fighter variant with two 0.303in (7.7mm) Vickers machine guns and powered by a Gnome Monosoupape 9NI rotary engine.
  • MoS 30 Production advanced trainer with either a 89kW (120hp) le Rhone 9Jb or a 101kW (135hp) le Rhone 9Jby rotary engine.
  • MoS 30bis Variant of the MoS 30 with a de-rated le Rhone 9Jby engine 67kW (90hp).

A number of escadrilles were created to operated the AI, but by mid-May 1918, most of the aircraft were replaced by the SPAD XIII. The aircraft became an advanced trainer, designated MoS 30. Many were used post-war after having been surplussed off, as aerobatic aircraft, including one which was flown by Charles Nungesser.

Fifty-one MoS 30s were purchased by the American Expeditionary Force as pursuit trainers.

Role fighter/trainer
National origin France
Manufacturer Morane-Saulnier
First flight August 1917
Primary user French Air Force
Number built 1210

General characteristics

  • Crew: 1
  • Length: 5.65 m (18 ft 6? in)
  • Wingspan: 8.51 m (27 ft 11 in)
  • Height: 2.40 m (7 ft 10¼ in)
  • Wing area: 13.39 m2 (144.1 ft2)
  • Empty weight: 421 kg (926 lb)
  • Gross weight: 649 kg (1,428 lb)
  • Powerplant: 1 × Gnome Monosoupape 9N, 112 kW (150 hp) each


  • Maximum speed: 225 km/h (140 mph)
  • Endurance: 1 hours  45 min
  • Service ceiling: 7,000 m (22,965 ft)
  • Rate of climb: 8.3 m/s (500 ft/min)


  • 1 7.7mm (0.303-in) Vickers machine gun forward of cockpit

End notes