§29.29 Empty weight and corresponding centre of gravity

(a) The empty weight and corresponding centre of gravity m ust be det ermined by wei ghing t he rotorcraft without the crew and payload, but with: (1) Fi xed ballast; (2) Unusable fuel; and (3) Full operating fluids, including: (i) Oil; (ii) Hydraulic fluid; and (iii) Other flu ids req uired for normal operat ion of rot orcraft systems, except water in tended fo r in jection in th e engines. (b) The condition of the rotorcraft at the tim e of det ermining em pty wei ght m ust be one t hat is well defi ned and can be easily repeated, particularly with respect to the weights of fuel, oil, coolant, and installed equipment.