MRC:
The environmental elements or conditions that an item is designed or protected to resist or withstand satisfactorily.ADZC
Environmental Protection:
Abrasion resistant and corrosion resistant and hydraulic fluid and hydrocarbon fuel and moisture resistant and nonphenolic grease solvent and weather resistant
MRC:
The lettering or design on the item,or that is the item.AYBM
Inscription:
Dist var freq, inertial nav, radar iff, sec fixed freq pwr, ws defog, prop heat, dist prim fix frez, ckpt emer, emer bus intlk