Engine-out

[Morph]

No

But what will happen is if your carbs float levels are not set up properly, and the float needle doesn't seal properly against the seat, you will get overflowing out of the overflow pipes.

You can check this by switching the pump on (plane motor off) and watching the carbs. If they start overflowing, adjust your float levels until they stop.

Ideally, you want to use the electrical pump as backup only. Use it for priming the carbs before starting, on takeoff and landing, and when flying low level

[motiveflow]

Thanx Morph

On the odd occasion i have forgotten switch it off, Only to switch it off after 10 to 15 min into the flight. I like pilot proof systems.

[Morph]

It should be fine, no harm done, just check that you don't have any overflowing

[Johannvanniekerk]

Yes, I had. My 2nd training hour 15 sec after takeoff in a my new secondhand Windlass trike with a 503. The high-time instructor paniced turned downwind of all things and we totaled the trike! Was lucky to walk away! Was a hang glider pilot before I bought the trike and I really thought that it was impossible the crash a trike (in normal flight). I always use to fly without an engine.

[Bayliner]

I was practising circuits with my instructor. Was having such a good time that both of us forgot the time. Fuel ran out. Lucky for us we were high over the runway to land normally.