The three-seat AC4 Gentleman, designed by Alfred Comte, was the first aircraft that has been build commercially in Switzerland. The A.C.4 Gentleman is a two-seat cabin monoplane of mixed construction.
The prototype was being flown in 1928, and the AC-4 was in production 1928-1930.
Six of the first version, powered by 90 hp Cirus III engines were produced from 1928.
A second series was produced in 1930 powered by 110 hp Cirrus Hermes or 140 hp Genet Major engines.
One machine, owned by Swissair, was re-engined with an Armstrong-Siddeley Genet Major radial.
Engine: Cirrus Hermes III A.D.C., 138 hp
Wingspan: 40.354 ft / 12.3 m
Wing area: 215.28 sq.ft / 20.0 sq.m
Length: 26.575 ft / 8.1 m
Height: 9.186 ft / 2.8 m
Max take off weight: 1764.0 lb / 800.0 kg
Weight empty: 1102.5 lb / 500.0 kg
Max. weight carried: 661.5 lb / 300.0 kg
Max. speed: 92 kts / 170 km/h
Initial climb rate: 590.55 ft/min / 3.0 m/s
Service ceiling: 13123 ft / 4000 m
Wing load: 8.20 lb/sq.ft / 40.0 kg/sq.m
Range: 378 nm / 700 km
Endurance: 6 h
Crew: 2+1
All Aero 