§ 121.647 – Factors for computing fuel required.
Each person computing fuel required for the purposes of this subpart shall consider the following:
(a) Wind and other weather conditions forecast.
(b) Anticipated traffic delays.
(c) One instrument approach and possible missed approach at destination.
(d) Any other conditions that may delay landing of the aircraft.
For the purposes of this section, required fuel is in addition to unusable fuel.