Physical: While performing maintenance on an aircraft, employees must be able to balance, bend, stoop, crawl, climb, climb stairs, crouch, carry items up to 50 pounds, grasp, kneel, lift items 50 pounds or over, pull hand over hand, push, reach above shoulder, use repetitive motion, sit on average 2 hours per day, stand on average 8 hours per day, walk on average 6 hours per day, possess the ability to see and follow precise instructions, documents, diagrams, or blueprints, to distinguish color differences, to see and read information via computer screen or other electronic device, to detect distinct, specific noises, to hear if equipment/tools, etc. are operating properly, to hear and understand precise directions, to hear and understand what others are saying in normal conversation. Communication: While performing maintenance on an aircraft, employees must be able to read, write, speak, and understand the English language, to understand and follow complex instructions and guidelines, to complete complex forms, documents or reports, and/or conduct complex oral communication with others, to express or exchange ideas by means of the spoken word, communicating orally with others accurately, loudly, and quickly.