How should the flight carabiners be checked for safety?

The most effective method to ensure the safety of flight carabiners is by squeezing them. This action allows the operator to check if the locking mechanism is functioning properly and that the carabiner closes securely. Squeezing also helps to detect any wear or damage that could compromise the integrity of the carabiner. It is essential for the safety of the individuals using the equipment that the carabiners are not only visually inspected but also tested for their functional reliability.

While visual inspections play a role in identifying obvious signs of wear or damage, they cannot confirm whether the locking mechanism is working as intended. Weighing the carabiners may not provide useful information about their condition, as it does not indicate functionality or safety-related issues. Comparing a carabiner with an older pair could provide some insights, but it still lacks the essential functional checking that squeezing offers. Thus, the squeezing method stands out as the most comprehensive way to verify the safety of flight carabiners before use.