StacksVerified U.S. regulatory reference

14 CFR §25.1153

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)There must be a separate propeller feathering control for each propeller. The control must have means to prevent its inadvertent operation.
  2. (b)If feathering is accomplished by movement of the propeller pitch or speed control lever, there must be means to prevent the inadvertent movement of this lever to the feathering position during normal operation.