Joby Aviation gains as electric air taxi enters final FAA certification phase

Shares of electric air taxi co Joby Aviation JOBY.N rise nearly 5.4% to about $15.7 premarket

JOBY initiates power-on testing of its first FAA-conforming aircraft to be built for Type Inspection Authorization (TIA)

TIA testing is part of final stage of FAA type certification process

Co can now begin conducting hardware and software integration tests in preparation for "for credit" flight testing

As of last close, shares up 81.6% YTD