The proper method for inspecting a Ground Power Unit (GPU) cable before connecting it to an aircraft involves a systematic visual and physical examination to ensure its integrity and prevent electrical hazards. Begin by visually inspecting the entire length of the cable for any signs of external damage, such as cuts, abrasions, cracks, or exposed wires. Pay close attention to areas where the cable may have been subjected to stress or wear, such as near connectors or where the cable has been bent or coiled. Check the cable's insulation for any signs of discoloration or swelling, which may indicate internal damage or degr....
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