This is an awkward question – I haven’t seen it yet in the UK, but it certainly has appeared in other countries.

 

Also, I suspect we might see it here in UK sometime soon –

 

Cruise overhead to overhead 3hrs 12mins 

 

Fuel flow: 23 in.HG (or full throttle), 2300 RPM, 20°C lean. FL70 ISA +20°C 68.75PPH (CAP 697 section 2 page 6)

 

So,

 

TRIP FUEL = 3hrs 12mins + climb correction + descent correction

                    = 3hrs 12mins + (3mins + 10 lbs)  + (10mins) = 3hrs 25mins +10lbs

                    = (3.417 x 68.75) + 10 = 245lbs

 

BLOCK FUEL = Start up + Trip + Reserve = 10 + 245 + (30% x 245) = 328lbs