August 30, 2023 - In Investigation Forms and checklists Letter Template For Appointment Of Observers And Participants This is a Letter Template for Appointment of Observers and Participants by the Nigerian Safety Investigation Bureau. Download (PDF) Previous INVESTIGATION EVENT MANAGEMENT CHECKLIST – EVENT 55: ANALYSIS AND REPORT OF THE AIR TRAFFICE SERVICES AND AIRPORT GROUP Next Investigation Event Management Checklist- Event 43 (Autopsies)