Wrong heading in Nevada

Hi,

just wanted to fly a IFR checkride from Nellis AFB and got the wrong heading in the HUD, VTB and HSI. The aux compass leads also to the wrong direction.

I did a full alignment, with the correct lat/long position of my startposition (in decimal format). I used the North and West coordinates from the F10 view.

After take-off on runway 03R we should fly heading 03° but got 17°. I attached two screenshots and my track.

My buddy tested also the Cv mode. There is the heading correct.

Nevada-Training_M2000C_v19-20160729-214239.trk

Magnetic variation? 17 and 3 are 14 degrees apart which is roughly the local difference between true and magnetic north.

Also note that the labels on the HUD heading tape are in 10s of degrees. "17" indicates "170°" and 03 indicates "030°".

Those two pictures, if they were taken at the same time, suggest you are flying on 045°T and 172°M which is a huge indication error.

What was the nature of your alignment?

Same issue here !

Instant action "take off".

Cockpit headings 065°, external view heading 298° !!!

Maybe it's link to magnetic variation in INS: it displays "-126.3"...... should be about "-12"

Now I create a new mission in ME and heading is correct: 292T / 280M, and magnetic variation display is correct too: -12

So it must be a bug with old missions.

Same here. I took off only using TACAN, with the INS *not* aligned initially, and the heading given by the Groom Lake TACAN was exactly 180 degrees off. After aligning the INS in the air, everything was good. Didn't know that TACAN was tied to INS.

But yeah, could have been an old mission vs new update issue.

Magnetic variation? 17 and 3 are 14 degrees apart which is roughly the local difference between true and magnetic north.

 

Also note that the labels on the HUD heading tape are in 10s of degrees. "17" indicates "170°" and 03 indicates "030°".

 

Those two pictures, if they were taken at the same time, suggest you are flying on 045°T and 172°M which is a huge indication error.

 

What was the nature of your alignment?

That's what I meant: 030 and 170.

What Do you man with nature of alignment?

And same results here, it seems to bei an issue with old missions.

I made a mistake last night where I entered the position of my aircraft incorrectly during the INS warm up. When entering the Lat/Lon coordinates of my aircraft I entered E instead of W (W being where nevada is and I was used to entering E, where Georgia is). That lead me to an instance of being 90ish degrees off.

So, one tick on the INS Align dial to VEI, enter +N ###### when +E ###### when it should have been +W ######

EDIT: Correcting my post: It was the HSI mode that ad me off. NAV had be off 90+ degrees whereas Cm/Cv were fine.