37 Maintenance, overhaul, cleaning, washing, repair, renovation, maintenance, overhaul, cleaning, washing and repair of airplane engines, of aeronautical, avionic, hydraulic, pneumatic apparatus, machines, appliances and equipment and of their parts; maintenance, cleaning, renovation of equipment for cabins, cockpits or baggage holds; maintenance and cleaning of floors, surfaces, seats, armchairs, tray tables, seat pockets, luggage compartments, ashtrays, bins, video screens, particularly on board airplanes maintenance and cleaning of toilets; supervision and coordination of maintenance, overhaul, cleaning, washing, repair, renovation of all vehicles and of their component parts cleaning and maintenance of headrests, maintenance, cleaning and repair of leather, textiles or of any covering; cleaning and maintenance of electric, electronic, audio and video equipment and apparatus, particularly provided on board airplanes; vehicle repair, namely, air vehicle repair; information relating to maintenance, overhaul, cleaning, washing or repair of all vehicles and of their component parts, of aeronautic, avionic, hydraulic and pneumatic apparatus and equipment, fire alarm maintenance and repair; renovation of vehicles, namely, of airplanes; interior and exterior painting; vehicle polishing; rebuilding machines that have been worn; rebuilding engines that have been worn maintenance, overhaul, cleaning, washing and repair of all security equipment, particularly on board airplanes; furniture maintenance and restoration; machinery installation, maintenance and repair; plumbing