Sierra has a proven history of meeting the high demands and stringent lead times for the Aerospace industry requirements. Sierra has achieved our AS9100 standard following strict quality control procedures. For the last two years Sierra has completed work for a large majority of the major manufactures in the Aerospace industry with full approvals (see approval list) for their painting processes. Our proven successful history, along with obtaining the prestigious AS9100 certification is allowing our company to reach our goals as an industry leader. more... See more text