Hi JG51_Ruski,
I don't use BAT so I don't know the file structure in this modpack but in each case this structure is very similar.
the unpacked file, and it will be " ! MB5 " you need to place in the main game folder, in my case it is #SAS folder.
Then you need to complete the entry in air.ini :
path: the main game folder , again in my case it will be #SAS and in your case maybe #WAW ? anyway, for example:
< #SAS > (or < #WAW > ) , < STD > , < com > , < maddox > , < il2 > , < objects > air
Open the air.ini file. and add this line:
MB5 air.MB5 1 NOINFO gb01 SUMMER
you can also add( but it is not necessary) an entry to the plane.PROPERTIES file:
MB5 Martin-Baker MB-5, 1944
path:
< #SAS > (or < #WAW > ) , < STD > , < i18n > plane.PROPERTIES
I hope it will help.
Best regards,
Piotrek