Grob G 115

The Grob G 115 is a two-seat training aircraft Grob Aircraft AG Mindelheim in Swabia.


The Grob G 115 was built in the 1980s and is designed for pilot selection training, basic and advanced training and aerobatics training, and training. Model were built only in small numbers precursor G 110 (first flight February 6, 1982 ) and G 112 (first flight 1984). The former was also a fiberglass wing monoplane with fixed Bugradfahrgestell and Lycoming O -235 -M1 boxer engine with 87 kW. However, on 24 July 1982, the plane crashed in the spin testing, whereupon the second prototype was not completed and is the G 112 configured with folding wings, reduced span and a modified rudder. The first machine was a coarse 2500E engine and the second a Lycoming O -235 -P1 boxer engine with 87 kW. This however, was also the precursor to the prototype of the successful G 115, which did not have compared to the G 112 collapsible wings and a sliding hood instead of the car doors.

The first flight of the 115 G was made on 15 November 1985 was admitted in March 1987 and was certified in late 1988 FAR Part 23. By March 2006, about 360 copies (81 115 G, 19 G 115A, 115B 3 G ) were manufactured.

The first production version was compared with the prototype of a lowered tailplane and clad wheels, however, was underpowered with the Lycoming O -235 - H2C boxer engine with 85 kW and two- blade propeller. The received 1989 delivered G 115A propellers, the. Available from 1988 G 115B stronger Lycoming O -320- D2A engine with 111 kW At this time, the four-seat G 116 development was presented with 147 kW Lycoming IO-360 engine, on April 29, 1988 had its maiden flight. It remained, however, due to lack of demand in this prototype. From 1990 the production of 115 G rested and was admitted only in 1993 with the improved in many details G 115C again. This had, for example, as driving the Lycoming IO -320 piston engine with 119 kW and 100 liters instead of the fuselage tanks now two wing tanks with 75 liter capacity, making a luggage room in the trunk was born.

The G 115 D / E / EC are equipped with a Lycoming piston engine type AEIO -360 - B1F / B with 134 kW, which was modified for aerobatic use to ensure lubrication and fuel supply in all flight modes. For power transmission, a 3-blade constant speed variable pitch propeller is used.

End of the 1980s, Grob involved with the G 115T in a tender for a light Traingsflugzeug for pilot selection for the U.S. Air Force. This machine flew in June 1992 for the first time and was equipped with a retractable landing gear and six-cylinder injection engine Lycoming AEIO -540 with 191 kW and four-bladed propeller. As winner of the tender was not coarse, rested the project and was continued in 2000 as G 120A.

All G 115 are entirely made of fiber composite materials of high surface quality and therefore has a particularly high aerodynamic quality. Due to the authorized maximum load factor of 6 / -3g is fully aerobatic.

Following the insolvency of Grob in 2008, the production rested initially, but was resumed after the takeover of coarse by H3 Aerospace 2009.


  • G 115, G 115 A: Original Version and 1990 built with 85 kW Textron Lycoming O235H2C drive, two-blade propeller and 590 kg Empty weight
  • G 115B: More powerful engine Lycoming O -320, 670 kg Empty weight
  • G 115C: Highly modified cell surface tanks with higher fuel stock
  • G 115D: aerobatics legal version, Lycoming AEIO -360 engine, 3 - blade constant speed variable pitch propeller
  • G 115E/EG: military version for the Royal Navy and Royal Air Force

Specifications (G 115 E )