Analysis of information sources in references of the Wikipedia article "空中客车129号班机空难" in Chinese language version.
Immediately after take-off, the captain then carried out the test procedures: autopilot engage, throttle-back port engine and trip circuit-breaker for blue hydraulic circuit.
Immediately after take-off, the captain then carried out the test procedures: autopilot engage, throttle-back port engine and trip circuit-breaker for blue hydraulic circuit.