Aircraft Energy Management Alert System

What does the low energy aural alert 'SPEED SPEED SPEED' indicate to the pilot?

Under what conditions will the low energy aural alert NOT be triggered?

Which inputs does the low energy aural alert rely on for its computation?

What happens immediately after the low energy aural alert is triggered if nothing changes?

At what altitude range is the low energy aural alert available?

What is the frequency of the low energy aural alert 'SPEED SPEED SPEED'?

At which altitudes is the low speed alert available?

In which configurations can the low speed alert be activated?

Low Energy Aural Alert

A low energy aural alert, repeating "SPEED SPEED SPEED" every 5 seconds, warns the pilot of decreasing aircraft energy below a recovery threshold.
The alert indicates the need to increase thrust to regain a positive flight path angle (FPA).
The alert is activated when aircraft energy falls below a threshold between 100 and 2,000 ft altitude.
Alert availability depends on configuration (2, 3, or full).
Alert triggering speed depends on the aircraft's flight path angle (FPA) during deceleration. For example, at -3° FPA, the alert triggers at approximately VLS -8; at -4° FPA, at approximately VLS -2.
The alert prioritizes prompting pilots to adjust thrust using the SPEED scale.
It occurs immediately before the ALPHA Floor alert.
The alert is calculated by the PRIM system using aircraft configuration, air speed deceleration rate, and flight path angle.

Alert Limitations

The alert is disabled during:
- TOGA selection
- Below 100 ft or above 2,000 ft.
- Alpha floor or GPWS alert activation.
- Failed vertical speed (RA) sensors in alternate or direct law.
Alert timing relative to the ALPHA Floor depends on deceleration rate. Alert delay occurs if deceleration happens before ALPHA floor unless an ALPHA floor is triggered by stick deflection in which case there's no delay.

This quiz covers the functionalities and limitations of the Low Energy Aural Alert system used in aviation. It aims to educate pilots on recognizing the alert, understanding its activation criteria, and the importance of adjusting thrust to regain a positive flight path angle. Explore how this alert interacts with other systems and its role in flight safety.