Aviation ICAO Universal Safety Oversight Audit Programme BY Aviation Media December 1, 2015 NAMA MD, Engr. Ibrahim Abdulsalam with Senior Operational ATC Expert, ICAO Technical Cooperation Bureau, Ben Hallberg (left) and ICAO Safety Management Expert, Anders Ellerstrand (right) during the review of ICAO Universal Safety Oversight Audit Programme (USOAP) 2016 Protocol Questions at NAMA headquarters, Lagos.