Which procedure should be followed during a trim runaway situation?

During a trim runaway situation, it is crucial to follow the appropriate procedures to regain control of the aircraft. The correct response, which encompasses all the actions mentioned, is essential for ensuring that the flight crew addresses the issue effectively.

Pushing the trim interrupt switch to INTR is a critical initial step because it disables the automatic trim inputs, allowing the pilots to regain manual control over the aircraft's trim settings. This immediate action helps to stop further undesirable trim adjustment, which is vital in a runaway scenario.

Pulling the circuit breaker of the failed trim is also an important procedure. If the runaway condition is due to a malfunction in the trim system, cutting the power to that system ensures that it does not continue to operate unexpectedly, which can further complicate control of the aircraft.

Setting the trim interrupt switch back to NORM might be necessary after addressing the runaway situation, allowing for normal trim operation to resume in a controlled manner, assuming the trim system is deemed safe to use again.

Collectively, these procedures are designed to work in tandem to stabilize the aircraft during a trim runaway, highlighting the importance of thorough training and adherence to emergency protocols in aviation. Following all these steps contributes to effectively managing the situation and prioritizing safety.