Engines
FAA Finalizes Special Conditions for ZeroAvia's Electric Engine
Hydrogen-electric powertrain developer progresses toward certification
ZeroAvia's Dornier 228
ZeroAvia's Dornier 228 testbed during ground operations. The aircraft flew 12 ZA600 powertrain test sorties before flight-test activity was suspended in 2024.

The FAA has issued final special conditions for ZeroAvia's ZA601 electric engine that serves as the motor-and-controller assembly at the core of the company's hydrogen-electric ZA600 powertrain.

Published in the Federal Register on March 18, the special conditions fill gaps left in the requirements of Part 33, the FAA's existing engine airworthiness rulebook, which was written for fuel-burning turbine and reciprocating engines dating back to 1965. 

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