Text in force at CS25-28: from CS25-0, effective 17 Oct 2003.
(a) Each oil shut-off must meet the requirements of CS 25.1189.
(b) The closing of oil shut-off means may not prevent propeller feathering.
(c) Each oil valve must have positive stops or suitable index provisions in the ‘on’ and ‘off’ positions and must be supported so that no loads resulting from its operation or from accelerated flight conditions are transmitted to the lines attached to the valve.
ED Decision 2003/002/RM · Source