The aircraft is powered by a Grob 2500E1 horizontally opposed, four-cylinder, air-cooled engine, which provides a direct drive to a Hoffman Ho- V62 R/L160BT variable-pitch, two-bladed propeller. The conventional landing gear, which is non-retractable, comprises two main wheels with fairings, and a tailwheel, which is steered through the rudder pedals. A retrofitted throttle is provided for use by the left-hand seat, giving the student the familiar military configuration of right-hand stick and left-hand throttle arrangement.

The Vigilant TMk1 is a cost-effective, modern aircraft. Its docile handling characteristics, combined with good fuel economy, make it an excellent training aircraft for cadets and instructors alike.

Technical Data:

Span: 17.4m (57.1ft)
Length: 8.1m (26.6ft)
Height: 1.7m (5.6ft)
Aspect Ratio: 16:1
Wing Area: 19m² (204.5ft²)
Max. Flying Weight: 908kg (2002lbs)
Max. Wing Loading: 47.8kg/m² (9.8lbs/ft²)
Engine: Grob 2500 horizontally opposed 4 cylinder air cooled

Maximum Speeds:

Never exceed speed in calm air: 130kts (below 6500ft up to 850kg)
Normal operations in calm air: 117lts (up to 850kg
Max. speed in turbulence/maneuvering: 83kts (up to 850kg)

Flight Performance Envelope:

Acceleration limits: +3.5/0g (up to 850kg)
Best angle of climb: 49kts
Best rate of climb: 60 kts (fine pitch) 75kts (coarse pitch)
Best glide angle: 1:28
Cruise fuel consumption: 12-15 liters per hour (100ltr tank)

Mass and Balance:

Max all up mass for take-off/landing: 908kg
Max baggage: 17kg
Max fuel mass: 72kg
Max crew mass for solo flight: 110kg
Max crew mass for dual flight: 220kg
CG limits: 271mm forward to 427mm aft of datum