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21jAeroDesign Limited is an EASA approved design organisation specialising in the design and supply of non-OEM parts, integration of PMA parts, STCs and the approval of minor modifications and minor repairs. Using our extensive experience of airlines, 21jAeroDesign has a particular focus on cost and where savings may be made through intelligent design and engineering. Whether that be replacement parts, recovery of BER components, case specific repairs or AOG support for operational aircraft.