What is the maximum deploy and stow cycle time for thrust reversers after cold soaking?

The maximum deploy and stow cycle time for thrust reversers after cold soaking is established as 5 seconds to ensure the safe operation of the aircraft systems. This limitation is critical because if the thrust reversers do not deploy or stow within this time frame after being exposed to extremely low temperatures for an extended period, there could be operational risks when attempting to use them during landing.

Cold soaking can negatively affect the mechanical and hydraulic systems, potentially leading to delayed operation of the thrust reverser. Therefore, adhering to the 5-second cycle time helps ensure that the system is functioning properly and that flight crews can safely operate the aircraft without the risk of delays or malfunctions in critical phases of flight. This specific limitation emphasizes the importance of regular checks and adherence to pre-flight procedures in cold weather operations to maintain safety.