What color is Skydrol hydraulic fluid?

Skydrol hydraulic fluid is known for its distinct light purple color. This coloration is an important characteristic that helps ground personnel and maintenance crews easily identify the fluid during inspections and maintenance operations. Skydrol is a phosphate ester-based fluid commonly used in aviation hydraulic systems due to its fire-resistant properties. The light purple tint is intentionally used for safety and operational readiness, ensuring that it can be easily recognized and differentiated from other fluids used in aircraft systems. This is crucial in avoiding contamination and maintaining the integrity of the hydraulic systems.