CAP 697 section 4 page 68 – a 3 step method:

1. calculate TAS

2. calculate leg distance in NAM (use formula)

3. back to table – enter at START MASS, calculate END MASS – difference is FUEL required

1. TAS 406kts, ISA +20ēC, Note 2 (C) +20kts, 426kts

2. NAM = NGM x (TAS/GS) = 540 x (426/376) = 612 NAM

3. START MASS 60000kg …. Range 3898 NAM …. Subtract 612 NAM = 3286NAM

Back to the table – look for 3286 (3284 close enough) … corresponds to mass 52800kg (END MASS)

(START MASS – END MASS) = FUEL REQUIRED = 60000 – 52800 = 4200kg

Lastly, small correction (Note 2 A), +1%, +42kg, 4242kg