AeroQuiz

42nd Quiz - maximum points to earn were 6.
It 's surprise to me that R-14 Pinty is such well-known airplane :-)
Average mark of difficulty according to your valuation was 3.77 (maximum 5 - very difficult).

Cirrus SR-22 - high-performance single-engine, four-seat, composite aircraft. It is a more powerful version of the Cirrus SR20, with a larger wing, higher fuel capacity, and a 310 horsepower (231 kW) engine - Continental IO-550-N .

SNCASO SO-1120 Ariel III - French experimental helicopter. First flight April 18, 1951.

Detroit-Lockheed YP-24 - a 1930s prototype of two-seat fighter aircraft. Airplane was powered by Curtiss V-1570-23 "Conqueror" - liquid-cooled V12 engine, 602 hp (449 kW). YP-24 with its top speed of 344km/h was the fastest fighter in the United States in 1931.

Rubik R-14 Pinty - Hungarian single seater light training aircraft with a 40 HP engine was designed by Ernő Rubik (father of famous Rubik's cube inventor) and built by Aero Ever Ltd. in 1940s.

Table of Winners:

Name	Country	Points
Emmanuel Capart		6
Jean Pierre Schell		6
Bill Lines		6
Emilio Lafuente		6
Hans Høgh		6
Benny Jørgensen		6
Neil Evans		6
Juraj Andel		6
Markku Kanninen		3
Anonymous		2
Pierre Vallet		1