freedomtofly
I'm New Here
I have a GRT HXr with a Trutrak vision 385. My GPS source is the Safefly 2020 from GRT. This morning while flying I loaded the SAP for our airport, highlighted ENAV and VNAV and Capt under SAP. Then I flew runway heading about 8 mile final and engaged the TT by pressing the mode button. GPSS was showing on my A/P. The autopilot flew the correct heading but would not maintain altitiude even though the "wings" of the flight director were below the intended altitude. Also the airplane was flying below the HITS boxes. I'm wondering what I am missing in the approach.