NAM = 3000 NAM
From table 210 000 kg → 8019
NAM 1023 mins
(8019 – 3000) = 5019 NAM → 640 mins
Sector time 1023 – 640 = 383 mins
Icing/Pack flow/ISA - no correction
Climb correction +6 mins
Descent correction +11 mins
Sector time = 383 + 6 + 11 = 400 mins