VNAV has nothing to do with the autothrottle !!! In the CRJ 1000 the VNAV is not advisory but fully active thus the CRJ 1000 is approved for LNAV/VNAV, BARO VNAV and VGP approaches !!
To be able to land even on shorter Runways I modified the airfield length in the crj's airport database so the fmc accepted the airport as departure or destinations.
Now since short time even if I modify the runway length the fmc does not accept anymore modified airports with following message: "airport not in database" !
On CRJ1000 (did not check the other versions)
-LNAV knob does not allow anymore to activate the LNAV function !
- If AP disconnected via trimm the cavallery sound does not stop untill
AP in engaged again a then disconnected via main AP knob !
Without a doubt a big work has been done to overhaul the CRJ and bring that regional jet to a new life which I very appreciate.
Nevertheless there is some VNAV logic not working like it should:
- VNAV in cruise at TOD should not leave altitude until a lower altitude is selected !..once in VNAV descent must level off at any preselected altitude !
- VNAV "above constraints " in descent should be respected even if altitude preselector is set to lower altitude and continue after to the the preselected altitude.
- VNAV "below constraints" in climb should be respected even if altitude preselector is set to higher altitude and continue after to the preselected altitude.
- LNAV (white needles) during approach when ILS is captured should change automatically to NAV mode (green needles)