Nope. While it's true that the F-35 lacks a ram air turbine (RAT), it does have an auxiliary power unit (APU) that can power the flight controls, avionics, and electro-hydrostatic actuators as long as fuel remains. It also has a battery that can power critical systems for a few minutes when all else fails.

https://www.lockheedmartin.com/content/dam/lockheed-martin/e...