content_image/631197.jpg content_image/631208.jpg content_image/631209.jpg content_image/631210.jpg content_image/631211.jpg content_image/631212.jpg
<img src='content_image/631197.jpg'>

where— 

F$_{N}$ = Fuel used for the flight under consideration (i.e. flight $_{N}$) determined using Block-off/Block- on Method (in tonnes); 

T$_{N}$ = Amount of fuel contained in aeroplane tanks at Block-off for the flight under consideration i.e. flight $_{N}$ (in tonnes); and 

R$_{N}$ = Amount of fuel remaining in aeroplane tanks at Block-on of the flight under consideration i.e. flight $_{N}$ (in tonnes). 

## Fuel Uplift 

6. —(1) For flights with a fuel uplift, unless the subsequent flight has no uplift the aeroplane operator must use the following formula to compute fuel use according to the Fuel Uplift Method( a )— 

<img src='content_image/631208.jpg'>

where— 

F$_{N}$ = Fuel used for the flight under consideration (i.e. flight $_{N}$) determined using fuel uplift (in tonnes); and 

U$_{N}$ = Fuel uplift for the flight considered, measured in volume and multiplied with a density value (in tonnes)( b ). 

(2) For flight(s) without a fuel uplift (i.e. flight $_{N+1}$, …, flight $_{N+n}$), the aeroplane operator must use the following formula to allocate fuel use from the prior fuel uplift (i.e. from flight $_{N}$) proportionally to block hour— 

<img src='content_image/631209.jpg'>

<img src='content_image/631210.jpg'>

<img src='content_image/631211.jpg'>

<img src='content_image/631212.jpg'>

where— 

F$_{N}$ = Fuel used for the flight under consideration (i.e. flight $_{N}$) determined using fuel uplift (in tonnes); 

F$_{N+1}$ = Fuel used for the subsequent flight (i.e. flight $_{N+1}$) determined using fuel uplift (in tonnes); 

F$_{N+n}$ = Fuel used for the follow-on flight (i.e. flight $_{N+n}$) determined using fuel uplift (in tonnes); 

U$_{N}$ = Fuel uplift for the flight under consideration (i.e. flight $_{N}$) (in tonnes)( c ); 

BH$_{N}$ = Block hour for the flight under consideration (i.e. flight $_{N}$) (in hours); 

BH$_{N+1}$ = Block hour for the subsequent flight (i.e. flight $_{N+1}$) (in hours); and 

BH$_{N+n}$ = Block hour for the follow-on flight (i.e. flight $_{N+n}$) (in hours). 

