What color is the hydraulic fluid used in F/A-18 E/F systems?

The hydraulic fluid used in F/A-18 E/F systems is color-coded for safety and identification purposes. The correct color for the hydraulic fluid in these aircraft is indeed green. This color designation is critical as it allows maintenance personnel to quickly recognize the type of fluid being used, which aids in ensuring compatibility with various components and aids in preventing potential accidents during maintenance and operations.

In aviation, fluid colors are standardized to help with quick identification, not only in emergencies but also during routine maintenance checks. The green hydraulic fluid indicates a specific formulation that meets military specifications and is compatible with the aircraft's hydraulic systems. Understanding this helps personnel ensure proper handling and operational procedures are followed, maintaining the aircraft's reliability and performance.