Fuel report on NAT
Hope it help you, on the IFALPA air traffic services Briefing leaflet, There is a check list used for reference, it gives you step by step all the flight phases, on the 'Overhead Waypoints" it states:
1-- Confirm next lat/long
2--Check track and distance against master CFP
3--Confirm time to next WPT
Note: 3-minute or more change on ETA requires ATC notificATION
4--POSITION REPORT-FUEL