37 Garage services, namely the repair and servicing of engines, structures, mechanisms and fitting out of aircraft; information regarding the repair and servicing of engines, structures, mechanisms and fittings of aircraft; supervision and overseeing for others of work on repairing and servicing of engines, structures, mechanisms and fittings of aircraft; maintenance, repair of navigation and communications apparatus for aircraft; services of maintaining and repairing aircraft; assistance and support to aerial assistance service providers with aircraft breakdowns in the nature of repairs; painting and polishing aircraft; overhauling worn or partially destroyed engines; services of cleaning, installing, maintaining, repairing and washing aircraft; services of upholstery for aircraft; repair of padding; service of installing alarms and radio apparatus; services of installing tires, windscreens, window glass; adjustment of aircraft, namely the tuning of aircraft systems and mechanisms