Hi, my names Aaron, and I was wondering if there was a way or a setting to make the 737 preform a non geometric descent, has is 737 decisions with about 50 to 70% N1. And if I remember right the non geometric descent is when the FMC plans to descend at Idol power.

I believe the PMDG 737NGX does already do both descent profiles. Don't worrry about N1, that fan is going to spin regardless of thrust while moving through the air at M78 or whatever, but you can look at your fuel flow to see if you are in idle or creating thrust.

Make sure you have your hardware configured, too. NG N1 idle is around 40% at altitude.

Make sure you have your hardware configured, too. NG N1 idle is around 40% at altitude.

I believe the PMDG 737NGX does already do both descent profiles. Don't worrry about N1, that fan is going to spin regardless of thrust while moving through the air at M78 or whatever, but you can look at your fuel flow to see if you are in idle or creating thrust.

My hardwere is at idle when I start the descent, but I still have to disconnect the A/T and put the throttles at idle manually to get a idle descent. It seems the FMC isn't planning on doing a idle descent, it seems to always do a geometric descent. Also the throttles are definitely not at idle for descent. It's not just the wind effecting the N1.

At the moment only geometric descend is available on NGX. Ryan said that they might implement it in SP2.

Cool, thanks

My hardwere is at idle when I start the descent, but I still have to disconnect the A/T and put the throttles at idle manually to get a idle descent.

Try this and see if it helps. If you see ARM in the FMA below FL300 press the F1 key. That should put the A/T at idle and your physical throttle(s) at idle. Then disconnect the A/T and the engines will remain at idle during the descent. Monitor your speed closely.