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JLC Aeronautical LLC offers an effective, affordable and versatile air conditioning solution for the DHC-6 Twin Otter. Industry recognized on all variants. Aircraft OEM approved. Major Approvals Include: -Unites States, FAA STC SA4622SW -Canada, TCCA STC SA16-51 -EU, EASA STC 10071650 -Brazil, ANAC STC 2020S06-07 -India, DGCA Validation Whether you need full onboard air-conditioning or a simple, inexpensive and lightweight blower system for enhanced air circulation, we can assist. With operator diversity in mind, multiple installation options are available. These options include our Standard System, Dual System and Staged System (BLOWER ONLY) Installation. Our installation kits are FAA PMA manufactured by Zee Systems Inc. By design these kits are lightweight, robust and dependable. All kits are manufactured in subassembly form to simplify installation and in-field maintenance. Today our STC remains the most versatile and longest continually supported air conditioning solution for the DHC-6.