Originally Posted by Justabusdriver1

That’s not true as it also applies to 135. Specifically if you’re referring to needing an atp to fly in 121 yes you can work as sic in 135 but you still need an atp to act as pic in 135. And besides that you’ll be really restricted because the faa doesn’t rule the 135 world insurance does and the insurance requirements are way more restrictive than the faa most jobs I’ve seen out there also want an atp in the right seat.