Rob,
I was flying with my instructor today doing an ils approach.
On my 4500 i saw the green glideslope indicator above me and as usual intercepted the glide slope. However on the copilot side 3400 the glide slope indicator remained all the way at the bottom until i captured it then it read correctly. What would cause this. I thought the 3400 was slaved and should display what was on the 4500.
Alan