This is a small not exclusive list of FREEWARE aircraft working in P3D V4.2
INTRODUCTION:
In theory, P3D V4 native aircraft should be considered those airplanes that have been developed/100% modified for P3D V4 and are installed outside the program folder (in Documents). They are launched through their corresponding "addon.xml". This is what is done for example by A2A, Restauravia and some other.
Other aircraft are installed in Simobjects and normally are "100% compatible" P3DV4.
For the purposes of this list I will not distinguish them.
The rest are a variety of FSX aircraft that I have installed in P3D V4.2 and that work with minor faults.
FS9 aircraft don't work in any way, some FSX (few) also not work (normally they are old models).
The general issue (solved) is : Not sound in some items in VC - related to D.Dawson x32 sound gauge, he has published a x64 replacemet. Lots of info in internet.
This mainly affects to "clic" sounds. If you do not care much about listening to those sounds, you can bypass to change that gauge.
NATIVE OR COMPATIBLE
Restauravia: Fouga Zephir & Magister and Dassault Mirage IIIB
Maryadi: Boeing Osprey
Lagaffe: Cessna C150
Yannick Lavigne-Fred Banting-Rob Young,Bluebear: Robin DR400
FSX INSTALLED IN V4
Restauravia: Breguet Alizé, Dassault Etendard, Caudron 460
Dino Cattaneo: Boeing T45, Macchi MB326, Lockheed Viking, Grumman F14, according Dino, minor issues in fuel system.
Milton Shupe: Aero Commander AC560, De Havilland DH60 Puss Moth, Beech18, Spartan Executive
Jahn and others: Douglas C47
UKMIL: Blackburn Buccaneer
Virtual over Italy: Air Tractor
FSX 737, Alrot enhanced: Boeing 737
Tim Piglet Conrad: Embraer A-29, Morane Saulnier MS760, Pilatus PC6 This planes have sound aliased to FSX default planes that are not in P3D, they require a new sound file. Piglet's planes look better than in FSX (maybe because HDR).
LDR Development: Ryan Navion
Ants: De Havilland Tiger Moth