Heading mode switch (MAG/TRUE)

[19AB67 16]

Hi folks, 

 

I have just passed the North Pole on my trip EHAM-KLM97NP-PANC in order to check the 737NGX behaviour above this unique area (w/ the South Pole area as well).

 

(I know that the 737 is not really certified to fly North of was it 78°N.)

 

After waypoint NORVA I was heading true North. About 15nm before reaching the NP, I switched to CWS. 

The True North setting would be useful here, but actually I couldn't find the switch. 

Also the reference handbooks couldn't help me. 

 

Where is it? 

 

Thanx in advance. 

[g_precentralis 191]

There is no such a switch in 737NG.

[hopskip 253]

According to http://www.boeing.com/commercial/aeromagazine/aero_16/polar_nav_by_model.html

The NGX should have a "heading reference switch".

Not sure where this is, at a guess - near the IRS? (Absolute total guess based on no information at all!)

 

It is also suggested that this may be a customer option, and not all 737NG's may be equipped with this.

[Stratox 22]

I think PMDG said they would think about adding the functionality to the next update.

[rsvit 16]

http://forum.avsim.net/topic/404101-true-heading-switch/

[KriVa 307]

It is indeed a customer option. One PMDG decided not to model.