What data is presented in the alternate engine data display?

The alternate engine data display specifically presents alternate torque and N1 values. This display is crucial for monitoring the performance of the engine under different operating conditions, especially in scenarios where the standard engine data may be unavailable or compromised.

Torque is a measure of the engine's rotational force, which directly correlates to the engine's performance and efficiency. N1 represents the speed of the low-pressure compressor in a turbofan engine, expressed as a percentage of its maximum speed. Both parameters are vital for assessing engine health and performance, allowing pilots and maintenance crews to make informed decisions regarding engine operation.

In scenarios involving an engine failure or when transitioning to alternate configurations, having access to this specialized data helps ensure safety and effective management of the aircraft's performance. Thus, the presentation of alternate torque and N1 reinforces the importance of monitoring engine performance metrics in critical situations.