As long as you control an artifact, this creature gets +2/+0 and has flying.
The best of their trade know every bolt of their rigs, stem to stern.
Illustrated by Zoltan Boros · Core Set 2019 · #211
There are no rulings for Aerial Engineer.
This creature has flying as long as you control an artifact. (It can't be blocked except by creatures with flying or reach.)
Flying
As long as you control an artifact, this creature gets +1/+0.
This creature gets +1/+0 for each artifact you control.
Flying, vigilance
This creature gets +1/+1 as long as you control an artifact.
This creature gets +1/+1 as long as you control an enchantment.
This creature has flying as long as you control a Dinosaur.
As long as you control two or more artifacts, this creature gets +2/+0.