MIL-A-A-59290 (CID A-A-59290) Hydraulic Fluid, Arresting Gear
Superseding MIL-H-5559A
MIL-A-A-59290 is composed of a modified glycol and is generally used in aircraft arresting gear systems as a hydraulic fluid. This product is not interchangeable with any other type or grade of hydraulic fluid.
Physical Properties
Color: Clear to pale straw
Flash Point: None to boiling
Specific Gravity: 1.11 - 1.13
pH (50% Solution): 7.2 - 7.8
Boiling Point, minimum: 329 Degrees F (165 Degrees C)
Solubility: Water / Brine - Soluble, Oil - Insoluble