Rich,
Can you verify first that the aircraft DO show up normally in free flight? And can you also list which aircraft do not show up?
Yes, all of them are displayed and selectable in Free Flight and Quick Combat mode. Here is a list of all of the player-flyable aircraft that I have installed (the ones marked with an asterisk are the only ones that show up for campaign missions):
(* FOLDER_NAME = "Aircraft Name / Alternate-Additional Aircraft name")
* A6M2_ZERO = "A6M2 Zero"
A6M5_ZERO = "A6M5 Zero"
B737_400 = "FS2000 Boeing 737-400"
B777_300 = "FS2000 Boeing 777-300"
Beech_King_Air_350 = "FS2000 Beech King Air 350 "
Bell206b = "FS2000 Bell 206B JetRanger"
Bf109e = "CFS1 Messerschmitt Bf 109E"
Bf109g = "CFS1 Messerschmitt Bf 109G "
C182 = "FS2000 Cessna Skylane 182R RG" / "FS2000 Cessna Skylane 182S" / "FS2000 Cessna Skylane 182S IFR"
* CFS2AI_B24d_Liberator = "CFS2AI B-24D Liberator"
* CFS2AI_B25d_Mitchell = "CFS2AI B-25D Mitchell"
* CFS2AI_B5n2_Kate = "CFS2AI B5N2 Kate"
* CFS2AI_C47_Dakota = "CFS2AI C-47 Skytrain"
* CFS2AI_D3a1_Val = "CFS2AI D3A1 Val"
CFS2AI_G4m2_Betty = "CFS2AI G4M2 Betty"
CFS2AI_Ki43iib_Oscar = "CFS2AI Ki-43-IIb Oscar"
CFS2AI_P39d_Airacobra = "CFS2AI P-39D Airacobra"
* CFS2AI_Sbd2_Dauntless = "CFS2AI SBD-2 Dauntless"
* CFS2AI_Tbd1_Devastator = "CFS2AI TBD-1 Devastator"
CFS2AI_Tbf_Avenger = "CFS2AI TBF-1 Avenger"
Concorde = "FS2000 Concorde"
* Curtiss_P-40B_Tomahawk_II = "Curtiss P-40B Tomahawk II" / "Curtiss P-40B Tomahawk II (Flight One Panel)"
Extra300 = "FS2000 Extra 300S"
* F1_PH_P40 = "Flight 1 Pearl Harbor P40"
* F4F4_WILDCAT = "F4F-4 Wildcat"
F4U1A_CORSAIR = "F4U-1A Corsair"
F6F3_HELLCAT = "F6F-3 Hellcat"
Fw190a = "CFS1 Focke-Wulf Fw 190A"
Hurricane_I = "CFS1 Hawker Hurricane Mk I"
Lear45 = "FS2000 Learjet 45"
Mooney_Bravo = "FS2000 Mooney Bravo" / "FS2000 Mooney Bravo IFR"
N1K2J_GEORGE = "N1K2-J George"
* P38F_LIGHTNING = "P-38F Lightning"
P47d = "CFS1 Republic P-47D
P51d = "CFS1 North American P-51D
Schweizr = "FS2000 Schweizer 2-32 Sailplane
Sopcamel = "CFS1 Sopwith Camel
Sopwith_Camel = "FS2000 Sopwith Camel
Spitfire_Mki = "CFS1 Supermarine Spitfire Mk I
Spitfire_Mkix = "CFS1 Supermarine Spitfire Mk IX