Now that you mention it I believe my instructor did just that. draw a line on the windscreen or had me do it.It's no problem at all to learn without an artificial horizon. I think it is a distinct advantage. A student should get very comfortable with using the real horizon, and too often that ball becomes a crutch. A good instructor will often cover the AH if he sees a student relying on it. Put a grease pencil spot at eye level on the windscreen if needed while learning, soon that won't be needed.
Obviously, everything changes when a student starts learning about instrument flight, inadvertent entry into IMC, etc. If a reliable AH is available, it should be used.
The ultralights I learned to fly in had no such device ... you had to look out the windscreen. If the houses were getting larger you were descending and smaller meant you were climbing. Wings level was learned by looking at the left & right wing tips. My iFly 740b has an EFIS screen built in but needs an external AHRS which I don't have so any info given on the iFly EFIS screen is GPS based and slow to follow the real changes in flight attitude or direction.It's no problem at all to learn without an artificial horizon. I think it is a distinct advantage. A student should get very comfortable with using the real horizon ...
That's the old name for an attitude indicator. At some point in the 19 years between when I got my PPL and when I got the CPL the government had decided that everything had to be an "indicator" of some sort, so the artificial horizon became an attitude indicator and the gyrocompass became a heading indicator. They go with our vertical speed indicator, turn-and-bank indicator and the airspeed indicator. But we still have an altimeter instead of an altitude indicator and a turn coordinator instead of a turn coordination indicator. Someday some bureaucraft will spot that....What's an artificial horizon?
Many years ago I posted this. Seema like a good time to re post itFor your home built plane there is another way to have a AH. If Kitty is on your lap purring all is well and if it's above your head with claws out and hair standing straight up then you shouldn't be flying in the soup. Works well for banking turns also. I do recommend de-clawing the artificial AH first View attachment 93622