that was cause of GSX i believe

totally late to the game but there is a trick!

1) Rename the downloaded file to N566AA.zip


2) download another plane (MD-82 specifically) that does have the correct setup and unzip the .cfg file and .mda file to a place where you can edit it.


3) Rename those unzipped files to N566AA.cfg and N566AA.mda


4) open the N566AA.cfg file with notepad and go through the file and replace everything for the old airline or you can try cutting and pasting this into your new N566AA.cfg :
[FLTSIM.0]
title=Fly The Maddog X MD-82 - American (Metal)
Model=""
Panel=""
Sound=""
Effects=""
Texture="N566AA"
KB_Checklists=""
KB_Reference=""
description=American (Metal) Fly The Maddog X
wip_indicator=0
ui_manufacturer="McDonnell Douglas"
ui_type="MD-82"
ui_variation="American Airlines (Metal)"
ui_typerole="Commercial Airliner"
ui_createdby="LSH"
ui_thumbnailfile=""
ui_certified_ceiling=37000
ui_max_range=2360
ui_autonomy=5
ui_fuel_burn_rate=5800
atc_id="N566AA"
icao_airline="AAL"
atc_id_enable=1
atc_airline="American"
atc_flight_number=""
atc_heavy=0
isAirTraffic=0
isUserSelectable=1
atc_parking_types="GATE,RAMP,CARGO"
atc_parking_codes="AAL"


5) open N566AA.mda and edit as you please or replace contents with this:
[SERVICES]
Eng1Hours=0
Eng2Hours=0
APUHours=0
Brakes=1000
Offset=0
Eng1OilQty=160
Eng2OilQty=160
Eng1HydQty=170
Eng2HydQty=170
APUPneuPress=1000
Battery=1000
TotalHours=320120
TotalCycles=38714
ServiceCheck=320120
WeeklyCheck=23122024
[SYSTEM]
BGMusic=
Crew=Maddog
Units=1
Engine=0
PanelColor=0
PaxCabin=1
TailCone=0
CMAPMS=0
RMIType=0
PFDStyle=1
PFDNAV=1
Autobrake=0
Altimeter=1
GearWarningOpt=0
HFDS=0
noTASSAT=0
EngineLabel=0
TRPEPRSEL=0
MapHDGUp=0
NDWindArrow=1
ShowGS=1
ShowRR=0
AltArmAsFL=0
AutoArmAlt=0
FuelQtyGreen=0
EFB=1
[AUTOPILOT]
APAural=0
[ROUTE_PLANNER]
Flight=
FltIATA=
CostIndex=30
Contingency=750
Reserve=1000
Taxi=300
[NAVDATA_FILTER]
Radius=
MinRunwayLength=
[INOPs]
N566AA=