Improperly performed AGSM is the most common cause of G-LOC. Which error involves timing?

The correct answer is related to the error of rushing the breathing cycle during the Anti-G Straining Maneuver (AGSM). Proper timing in the execution of AGSM is crucial for its effectiveness in preventing G-induced Loss of Consciousness (G-LOC). When a pilot rushes through the breathing cycle—particularly the initial inhalation and the subsequent straining phases—there is insufficient time to adequately build up the pressure in the upper body and head. This pressurization helps maintain blood flow to the brain and counteracts the effects of G forces.

If the breathing cycle is rushed, the pilot may not create the necessary intrathoracic pressure that helps to keep the blood pooled in the upper body rather than allowing it to shift downwards due to the increasing G forces. This can lead to a rapid decrease in cerebral blood flow, increasing the risk of G-LOC. Proper technique involves a controlled and deliberate approach to breathing during the AGSM to ensure maximum efficiency and effectiveness under high-G conditions.

Understanding the importance of timing in the AGSM is essential for aviators to maintain awareness and prevent G-LOC during maneuvers that involve high gravitational forces.