Learjet 101 || How to execute an RNAV approach with VNAV

**All inflight footage taken under Part 91**
In this video, we will be discussing the proper way to load, sequence, and conduct an RNAV/GPS approach in the Learjet 60 UNS-1. There are many pitfalls that new and old pilots alike consistently run into when flying this type of approach and all these can be easily mitigated with proper FMS/FCP system knowledge. Enjoy!
**Additional notes:
1. Meant to say 'LNAV' instead of 'LNAV/VNAV'. LNAV/VNAV should be treated as a DA and not MDA and subsequently it should be the same procedure as LPV.
2. Disregard the 'Mach Trim' light, as that part (2:26) was filmed on the ground**

[CJPanichi]

**All inflight footage taken under Part 91**

[gavinkim]

I really appreciate the video. Thank you much. A couple follow up questions for you: 1) You explain how to determine the Capture Fix Altitude (in this ex 2893), but it isn't clear where that information is used in the example you provided. Perhaps it is the hard altitude you had selected with -30 10, 000 which certainly is above the capture fix altitude. Any reason why you couldn't also use -10 3000 as well? Just curious why you are using the -30/10000. Also, curious why this matters? What would be the outcome if the altitude set at KACY at say -0/1500, which is lower than the CFA? 2) While vectored onto the approach, in command heading mode, does the UNS use direct number inputs into the FMS CMD HDG to steer? As an example, when you loaded the CMD HDG, it showed 029 degrees. To adjust to 045, would you need to enter 045 of does one use the HDG knob to adjust?

Thanks for the explanations!

[drummerkid]

Hey there. Thanks for the video. Just curious why you need to set approach mode for an RNAV approach? Why can’t you simply select LNAV and VNAV and let it do it’s thing ? I flew the Q400 which had the same UNS FMS in it and that’s how we opted to fly Rnav approaches but maybe it’s different since it’s on the LR?

[snikxel]

Hi CJ. Where can i find the configuration on the FCP of the ALT-VNAV-APCH? Because I cant find it in the books.

[robcourtney]

LPV and LNAV/VNAV minimums are *both" published as "DA(H)", so you should be setting the missed altitude in both cases. There is no "MDA" on a LPV or LNAV/VNAV approach.

Look at the profile view of the KACY RNAV(GPS) 22: it even shows missed approach arrows at the LPV *and* LNAV/VNAV Decision Altitudes, versus a level-off at 520 MSL for the LNAV-only approach.

[pilotreefer]

Thank you for this video. We just recently installed an UNS 1LWS. Just wondering if this video approach sequencing applies as well? Thank you. Also any place else I can get some tutorials?