CS 29.971 Fuel tank sump

• ED Decision 2003/16/RM found in: CS-29 Amdt 11 - Large Rotercraft (Feb 2023)

CS 29.971 Fuel tank sump ED Decision 2003/16/RM (a) Each fuel tank must have a sump 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) must be effective with the rotorcraft in any normal attitude, and must be located so that the sump contents cannot escape through the tank outlet opening. (c) Each fuel tank must allow drainage of hazardous quantities of water from each part of the tank to the sump with the rotorcraft in any ground attitude to be expected in service. (d) Each fuel tank sump must have a drain that allows complete drainage of the sump on the ground. CS 29.971 Fuel tank sump ED Decision 2003/16/RM (a) Each fuel tank must have a sump 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) must be effective with the rotorcraft in any normal attitude, and must be located so that the sump contents cannot escape through the tank outlet opening. (c) Each fuel tank must allow drainage of hazardous quantities of water from each part of the tank to the sump with the rotorcraft in any ground attitude to be expected in service. (d) Each fuel tank sump must have a drain that allows complete drainage of the sump on the ground. #### CS 29.971 Fuel tank sump *ED Decision 2003/16/RM* (a) Each fuel tank must have a sump 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) must be effective with the rotorcraft in any normal attitude, and must be located so that the sump contents cannot escape through the tank outlet opening. (c) Each fuel tank must allow drainage of hazardous quantities of water from each part of the tank to the sump with the rotorcraft in any ground attitude to be expected in service. (d) Each fuel tank sump must have a drain that allows complete drainage of the sump on the ground.