Hi ivo.

The HUD should be one of these listed in tis section:

[Vcockpit00]
Background_color=0,0,0
size_mm=1000,1000
visible=0
pixel_size=700,700
texture=$MM_F5E_P1

gauge00=..\panel\MM_F5E!ASI,         17,  15, 158, 158  
gauge01=..\panel\MM_F5E!ATI,        194,   7, 175, 175
gauge02=..\panel\MM_F5E!ALT,         18, 199, 158, 158
gauge03=..\panel\MM_F5E!HSI,        201, 209, 158, 158
gauge04=..\panel\MM_F5E!AOA,          9, 383, 180, 180
gauge05=..\panel\MM_F5E!VSI,          5, 575, 184, 184
gauge06=..\panel\MM_F5E!SATI,       193, 383, 180, 180
gauge07=..\panel\MM_F5E!RPM1,       376,   4, 134, 134
gauge08=..\panel\MM_F5E!RPM2,       514,   4, 134, 134
gauge09=..\panel\MM_F5E!EGT1,       376, 146, 134, 134
gauge10=..\panel\MM_F5E!EGT2,       514, 146, 134, 134
gauge11=..\panel\MM_F5E!NOZ1,       374, 288, 135, 135
gauge12=..\panel\MM_F5E!NOZ2,       514, 288, 135, 135
gauge13=..\panel\MM_F5E!FFL,        376, 428, 135, 135
gauge14=..\panel\MM_F5E!FLQ,        514, 428, 135, 135
gauge15=..\panel\MM_F5E!OIL,        655, 288, 135, 135
gauge16=..\panel\MM_F5E!CPR,        655, 428, 135, 135
gauge17=..\panel\MM_F5E!TRM,        560, 575,  70,  70
gauge18=..\panel\MM_F5E!FLP,        645, 575,  72,  72
gauge19=..\panel\MM_F5E!LGC,        610, 660,  25,  25
gauge20=..\panel\MM_F5E!LGL,        568, 659,  25,  25
gauge21=..\panel\MM_F5E!LGR,        654, 659,  25,  25
gauge22=..\panel\MM_F5E!TRC,        560, 696, 138, 45
gauge23=..\panel\MM_F5E!GFI,        660, 150, 125, 125
gauge24=..\panel\MM_F5E!HYDU,       657,   4,  70, 70
gauge25=..\panel\MM_F5E!HYDF,       737,   4,  70, 70
gauge26=..\panel\MM_F5E!CLK,        380, 580, 160, 160
gauge27=..\panel\MM_F5E!AID,        715, 575,  72, 72
gauge28=..\panel\MM_F5E!AAI,        810,  20,  45, 110
gauge29=..\panel\MM_F5E!RDP,         10, 755, 240, 230
gauge30=..\panel\MM_F5E!CWS,        705, 657, 283, 180
gauge31=..\panel\MM_F5E!MCT,        945,   1,  42, 131
gauge32=..\panel\MM_F5E!EFL,        860,   1,  42, 131
gauge33=..\panel\MM_F5E!EFR,        905,   1,  42, 131
gauge34=..\panel\MM_F5E!TWP,        797, 543, 200, 100
gauge35=..\panel\MM_F5E!OXYG,       793, 145,  80,  80
gauge36=..\panel\MM_F5E!OXYP,       903, 145,  90,  90
gauge37=..\panel\MM_F5E!ENG1,       671,  80,  74,  54
gauge38=..\panel\MM_F5E!ENG2,       751,  80,  74,  54
gauge39=..\panel\MM_F5E!ABI,        962, 934,  25,  25

Unless it is created as a part of the model itself (built in). I don't know which entry it is either. And because I don't own a copy of that aircraft, I can't really help you any further with it. Sorry.

Mark