Precision Aviation Group began work on expanding its headquarters in Atlanta, Ga. The growth of Precision Aviation's four companies--Precision Heliparts, Precision Avionics & Instruments, Precision Heliparts-Canada and Precision Accessories & Instruments-Canada--necessitated the 12,000-sq-ft expansion, the company said. The work will include renovations of Precision Aviation's sales and service areas and should be completed in six months. The company processes thousands of accessories, avionics, instruments, and other rotable items for repair and overhaul each year. Its units have FAA, EASA and Transport Canada certifications.