Nevada Map - Aircraft Headings all in True ?

Went out for a little DR/Pilotage Navigation (with FC3 A-10A) up in the Northwest Sector of the Nevada Map (Nevada Test and Training Range - Nellis

Ranges).

Route of Flight: Cedar Pass - Tonopah Test Range (Airfield) - Mount Helen - Stonewall Mountain - back to Tonopah Rwy 32. While flying - I was also referencing a DoD chart (JOG - Joint Operations Graphic) at 1:250,000 Scale. What I noticed was that all Magnetic Headings (in Aircraft) were off by the exact amount (in degrees) of Magnetic Variation. In other words - Aircarft HSI Headings were showing True Headings instead of Magnetic.

Thinking this could be a FC3 Limitation - I repeated this flight with the MiG-21bis Module - same results - the aircraft was showing True Heading instead of Magnetic.

Data Points:

A-10A on Final had Left Crosswind adding 2-3 degrees left Crab

Magnetic Heading in Vicinity of Tonopah is calculated as follows: True Heading minus Magnetic Variation (subtract East is Least) = Magnetic Heading

Localizer Heading (Magnetic) for Tonopah Rwy32 is 321 degrees Magnetic (see Published Approach).

Current Magnetic Variation (from SkyView) is ~ 13 Degrees East (East is Least)

True Heading for KTNX Rwy 32 sould be 321 + 13 = 334 Degrees True (almost exactly what my Screenshot HSI Heading and Whisky Compass Show)

I have seen some other Threads here that also indicate Heading irregulartities with the Nevada Map.

So my Question is - am I a Paranoid Delusional - or do we have a Bug with our Modules flying on the Nevada Map ?

Compare only True Heading inside the Editor Map with the Magnetic Heading inside the cokpit.

Dont use external sources.

DCS has his own issues with magnetic declination vs true heading.

Fc3 aircrafts and mig-21 show true heading. I suppose that fc3 airplanes do that for simplicity, while, if i recall correctly, in the mig-21 the compass is adjusted for magnetic variation by ground crew before the flight. Try with the f-5, a-10c, m2kc or other full fidelity western aircraft, the compass will indicate magnetic heading.

Inviato dal mio S2 utilizzando Tapatalk

OK - Got It ! True vs Mag Heading

Thank you Folks for the Information. I think I have it figured out. As 'catt42' mentioned - using the FC3 A-10A and the MiG-21bis were not Fair evaluations of True vs Mag Heading.

By looking at the F-5E on final Rwy 32 at Tonopah, I confirmed the following:

- In Cockpit (F-5E) HSI Heading is correct Magnetic Heading

- Exterior (Chase - F2) View shows True Heading in the Bottom Data Bar