Copy the LInes from Below into your aircraft .cfg and  put the correct Numbering! for them to work in FSX

[fltsim.XX]
Title=Boeing B-17 F Flying Fortress  USAAF Theme
sim=B-17
model=fab
Panel=""
Sound=""
texture=army
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.05.16 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation="Uited states army airforce"
atc_heavy=0
atc_airline=FAB
atc_flight_number=17
prop_anim_ratio=0.5 

[fltsim.XX]
Title=Boeing B-17G Flying Fortress
sim=B-17
model=""
Panel=""
Sound=""
texture=2army
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.08.06 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation=Army Air corp
atc_heavy=0
atc_airline=USAF
atc_flight_number=17
prop_anim_ratio=0.5 

[fltsim.XX]
Title=Boeing B-17G Flying Fortress  Thunderbird (Triangle C)
sim=B-17
model=""
Panel=""
Sound=""
texture=Thunderbird
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.08.06 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation=Molesworth Triangle C  "Thunderbird"
atc_heavy=0
atc_airline=USAF
atc_flight_number=17
prop_anim_ratio=0.5 

[fltsim.XX]
Title=Boeing B-17G Flying Fortress   (Triangle W)
sim=B-17
model=""
Panel=""
Sound=""
texture=RRG_
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.08.06 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation= (Triangle W)
atc_heavy=0
atc_airline=USAF
atc_flight_number=17
prop_anim_ratio=0.5 

[fltsim.XX]
Title=Boeing B-17G Flying Fortress   (Triangle C)
sim=B-17
model=""
Panel=""
Sound=""
texture=Triangle C
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.08.06 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation=Molesworth Unmarked USAAF (Triangle C)
atc_heavy=0
atc_airline=USAF
atc_flight_number=17
prop_anim_ratio=0.5 

[fltsim.XX]
Title=Boeing B-17G Flying Fortress   (Captured BY GERMANY)
sim=B-17
model=""
Panel=""
Sound=""
texture=captured
kb_reference=B-17_ref
KB_checklists = CheckList_B-17
description=FS-Cast Boeing B-17 for FSX\nVersion 1.0 2008.08.06 \nModel, textures, panels and gauges by Francisco Sanchez-Castaner
atc_id_enable=1
atc_id=17
atc_id_color=1
ui_manufacturer=Boeing
ui_type="B-17 Flying Fortress"
ui_variation=Captured and In GERMAN  MARKINGS
atc_heavy=0
atc_airline=USAF
atc_flight_number=17
prop_anim_ratio=0.5