Sec. 29.29 - Empty weight and corresponding center of
(a) The empty weight and corresponding center of gravity must be determined by weighing the rotorcraft without the crew and payload, but with --
(1) Fixed ballast;
(2) Unusable fuel; and
(3) Full operating fluids, including --
(ii) Hydraulic fluid; and
(iii) Other fluids required for normal operation of rotorcraft systems, except water intended for injection in the engines.
(b) The condition of the rotorcraft at the time of determining empty
weight must be one that is well defined and can be easily repeated,
particularly with respect to the weights of fuel, oil, coolant, and
installed equipment. (Secs. 313(a), 601, 603, 604, and 605 of the
Federal Aviation Act of 1958 (49 U.S.C. 1354(a), 1421, 1423, 1424, and
1425); and sec. 6(c) of the Dept. of Transportation Act (49 U.S.C.
[Doc. No. 5084, 29 FR 16150. Dec. 3, 1964, as amended by Amdt.
29-15, 43 FR 2326, Jan. 16, 1978]