For negative G operations, what is the maximum time limit before exceeding -2.5 G?

The maximum time limit before exceeding -2.5 G during negative G operations is indeed 30 seconds. This guideline is crucial for the safety of the pilot and crew, as prolonged exposure to negative G forces can lead to significant physiological effects, such as redout or loss of consciousness.

In aviation training and operational protocols, pilots must adhere to these time limits to ensure their well-being and maintain control of the aircraft. Exceeding the 30-second limit increases the risk of negative effects, which is why it's established as a critical threshold for maintaining safety during maneuvers that generate negative G forces. Understanding these limits is essential for safe operation and effective decision-making in scenarios where negative G might occur.