FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

What are the characteristics of MIL-H-8446 (Skydrol 500 A & B) hydraulic fluid?

Red color, phosphate ester base, non-fire resistant, synthetic rubber seals

Light purple color, phosphate ester base, fire resistant, butyl rubber seals

MIL-H-8446 (Skydrol 500 A & B) hydraulic fluid is known for its light purple color, phosphate ester base, fire-resistant properties, and compatibility with butyl rubber seals. This fluid is specifically formulated to be fire-resistant, which is a crucial characteristic for hydraulic systems in aircraft to ensure safety in case of a fire emergency. The use of the correct hydraulic fluid is paramount to maintain the integrity and functionality of the hydraulic system in an aircraft.

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Blue color, vegetable base, will burn, natural rubber seals

Clear color, synthetic base, fire resistant, synthetic rubber seals

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