StacksVerified U.S. regulatory reference

14 CFR §25.1147

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)If there are mixture controls, each engine must have a separate control. The controls must be grouped and arranged to allow—
    1. (1)Separate control of each engine; and
    2. (2)Simultaneous control of all engines.
  2. (b)Each intermediate position of the mixture controls that corresponds to a normal operating setting must be identifiable by feel and sight.
  3. (c)The mixture controls must be accessible to both pilots. However, if there is a separate flight engineer station with a control panel, the controls need be accessible only to the flight engineer.