Describe the four fuel components in the material and explain why final reserve should not be treated as planned en-route fuel.

### Why this is right The answer identifies each component by its stated purpose and gives the two specified reserve quantities. Final reserve is set apart as an absolute minimum on landing, which means it is not available for planned consumption during the route. ### The concept The required fuel is formed by adding the four components. Trip fuel supports the planned route, while contingency fuel is calculated as 0.05 times trip fuel. Alternate fuel supports the alternate plan. Final reserve is expressed as 45 minutes at holding speed and protects a minimum fuel amount at landing; treating it as ordinary trip fuel would defeat that stated purpose. ### What a good answer covers - Trip fuel covers the planned route. - Contingency is 5 percent of trip fuel. - Alternate fuel is for the alternate plan. - Final reserve is 45 minutes at holding speed and is not planned for en-route use. ### Terms - **Alternate**: The planned alternative aerodrome or destination in the fuel plan. - **Final reserve**: The minimum fuel intended to remain on landing. ### Remember Final reserve is a landing minimum, not a planned route allowance.