Question id 535 - General Navigation - ATPL - Airline Transport Pilot license

only gyro-stabilised systems
both gyro-stabilised platform and 'strapdown' systems
only to 'strapdown' laser gyro systems
both gyro-stabilised and laser gyro systems but only when operating in the non 'strapdown' mode

Training tests and timed exam simulations ATPL - Airline Transport Pilot license