CERTIFICATION ON DEMAND - SIE, an AS9100 accredited firm, provides the highest quality aircraft engineering, certification, and Repair Approval services worldwide. SIE, founded in 1981 with offices in LA, Seattle, and Madrid Spain, SIE delivers major structural. analysis, and system integration engineering for STC (FAA/EASA) programs on Commercial, VIP, Business Jet and Military operators. Industry Recognized Experts in Major Repair and Alteration Programs. Installation Design Experience in Cabin Interior Modifications, Satcom Connectivity Systems, VIP Completions, and Security/Counter-Measure Systems. Worldwide customers include Southwest, IcelandAir, Norwegian, FedEx, JetBlue, USAF, USN, NASA, and numerous other aerospace clients.