Originally Posted by FlyingDiver
You can equip an E-LSA RV-12iS for IFR. Garmin GPS-175 is probably easiest.
There are a handful of -12's out there that were not limited to VFR because they were built before the change in LSA language prohibiting it went through. My E-LSA -12iS has the Garmin dual display and I fly it as if flying IFR quite often.
The G3X allows for making a flight plan. I build my flight plan adding the waypoints of the RNAV approach before the destination airport. Then I have my iPad with ForeFlight and the approach plate open for knowing the altitudes of each step down of the approach.
Example: IAF of 3,000' I use autopilot to hold 3,000' until crossing the IAF waypoint then dial in the next altitude of 2,500' and hit VS on the 307 autopilot control and "down" 500 feet per minute, drop manifold pressure to 15 - 16 and hold 70kts. At 2,500' I bring manifold pressure back to 25 to hold 2,500 then dial in the next waypoint altitude (say 1,600') then wait until crossing the current waypoint target then dropping manifold pressure to 15 - 16 and VS down 500 feet per minute until that altitude is reached and increasing manifold pressure to 25 again. Repeat procedures to 1,200' for last waypoint before runway and when 1,200 is reached I take off my Foggles (yes, I always have a Safety Pilot), tap off autopilot and make the decision to land or not (since actually in VMC it seems I have a 100% "make the landing" decision).
All this is done so that if I ever find my self flying into IMC unexpectedly I can utilize my Instrument abilities to get myself and passenger out of danger.
If the LSA rules ever change to allow IFR in the -12iS then I will be first in line to have the GPS175 installed! This airplane flies "IFR" so well I would trust it equipped as it is to fly an Instrument flight plan but it wouldn't be legal thus the GPS175 install.
The G3X with autopilot, AOA and ESP is an amazing avionics package.