Text in force at 25-153: from 25-36, effective 31 Oct 1974.
Each oil tank must be designed and installed so that--
(a) It can withstand, without failure, each vibration, inertia, and fluid load that it may be subjected to in operation; and
(b) It meets the provisions of Sec. 25.965, except--
[(1) The test pressure--
(i) For pressurized tanks used with a turbine engine, may not be less than 5 p.s.i. plus the maximum operating pressure of the tank instead of the pressure specified in Sec. 25.965(a); and
(ii) For all other tanks may not be less than 5 p.s.i. instead of the pressure specified in Sec. 25.965(a); and]
(2) The test fluid must be oil at 250° F. instead of the fluid specified in Sec. 25.965(c).
39 FR 35461 · Source