TAT Technologies Ltd. (TATT) operates in the Aerospace & Defense industry, providing OEM and MRO services for commercial and military applications. While financial ratios indicate strong compliance with debt, liquidity, and income thresholds across AAOIFI, MSCI, and S&P standards, the company's significant involvement in military aerospace and ground defense activities results in non-compliance under Shariah business activity screens. No inclusion in major Shariah indices confirms the overall non-compliant status. Purification is required for minor impure income, but does not address core business concerns. Investors should consider alternatives in civilian industrials.