IFD540/440 Touch Screen GPS/NAV/COM : Early Feedback on the IFD540

Author: Joe Jet
Subject: Early Feedback on the IFD540
Posted: 27 Oct 2014 at 9:14am

SB Jim wrote: Joe Jet wrote: Is there some additional selection i have to make to get a GS/VNAV vertical path indication on my 106A indicator when conducting an RNAV GPS LPV approach? I have searched the manual, but so far have only found a reference to check Advisory glideslope ON in AUX, user options; not even sure if that affects the indicator. I hope something isn't wired incorrectly. I do get GS indications when doing an ILS approach. Joe, if memory serves some pilots do not like or want the advisory glidepath and they asked Avidyne to make it a User On/Off item. I believe Avidyne complied so you will need to turn Advisory Glidepath On somewhere. Advisory glidepaths at some airports have been known to be a problem if one was to follow them strictly to the airport. They could place one below an MDA at given fix or leave one with unsafe terrain separation. Always make sure you adhere to the approach plate MDA's on such an approach and that you don't leave the MDA until you've got the airport in sight. Regards, Jim

Havent had a chance to check my actual unit and see if advisory glideslope is on or not. I have checked both the domestic and jnternational ipad sims and it seems the default setting is GS on. In the Boeing FMS the glidepath goes from the last waypoint, ususally the runway waypoint, at the published angle back and guarantees crossing all MDA constraints at or above published segment minimums. I would think that this is both a TERPS and certification requirement. Ill have to wait to check my actual installed 540.

Edited by Joe Jet - 11 hours 39 minutes ago at 9:21am