Giggit...
The warning has nothing to do with airspeed. It independent of protections. It has nothing to do with VLS, this warning can trigger at any airspeed within its reporting envelope. The warning indicates thrust is limited. If flying AT off, increase thrust, if flying AT on, you must push the TL's past the climb detent.
“A low energy warning alerts pilots when aircraft energy is insufficient to achieve a climbing flight path through pitch control alone. The “SPEED, SPEED, SPEED” voice alert repeats every 5 seconds while the condition exists. Thrust must be increased to achieve a climbing flight path. The low energy warning is computed by the FACs. It is available inconfigurations 2, 3, and FULL and is based on aircraft configuration, airspeed deceleration rate, and flight path angle.”
Last edited by CaptainMongo; 20th Feb 2018 at 18:37.