§29.971 Fuel tank sump

(a) Each fuel tank m ust have a sum p with a capacity of not less than the greater of: (1) 0.10% of the tank capacity; or (2) 0.24 litres (0 .05 Imperial gallon/one sixteenth US gallon). (b) The capacity prescribed in sub-paragraph (a) m ust be effective w ith th e ro torcraft in an y normal attitude, and m ust b e lo cated so th at th e sump cont ents cannot escape t hrough t he tank outlet opening. (c) Each fuel t ank m ust al low drai nage of hazardous quantities of water from each part of the tan k to th e su mp with th e ro torcraft in any ground attitude to be expected in service. (d) Each fuel tank sump m ust have a drai n that allows complete drainage o f th e su mp o n th e ground.