Did the AT10 have featherable props?

The next responder will know that, I am certain.

If not, was level flight
maintainable with a windmilliing prop?

Rarely is. Even on a twin as powerful as a Mosquito, an unfeathered prop was a
death sentence.

v/r
Gordon
====(A+C====
USN SAR

Its always better to lose AN engine, than THE engine.