August 30, 2023 - In Investigation Forms and checklists OJT Progress Chart Form NSIB.04.03 This is a OJT Progress Chart Form NSIB.04.03 by the Nigerian Safety Investigation Bureau. Download (PDF) Previous INVESTIGATION EVENT MANAGEMENT CHECKLIST – EVENT 45: NAVIGATION AIDS AND AIRPORT STATUS Next INVESTIGATION EVENT MANAGEMENT CHECKLIST – EVENT 29: WRECKAGE DISTRIBUTION PLOTTING