Working inside an aircraft fuel tank requires strict adherence to safety procedures to minimize risks. Here's a comprehensive guide: *Pre-Work Procedures:* 1. Obtain approval from aircraft owner/operator. 2. Review aircraft maintenance manual and fuel tank repair procedures. 3. Ensure proper training and certification. 4. Conduct risk assessment and hazard analysis. 5. Prepare a detailed work plan and checklist. *Safety Precautions:* 1. Fuel tank draining and purging. 2. Ventilation and atmosphe