(a) The landing gear must be designed to—

1. (1) Provide stable support and control to the airplane during surface operation; and
2. (2) Account for likely system failures and likely operation environments (including anticipated limitation exceedances and emergency procedures).

(c) For airplanes that have a system that actuates the landing gear, there is—

1. (1) A positive means to keep the landing gear in the landing position; and
2. (2) An alternative means available to bring the landing gear in the landing position when a non-deployed system position would be a hazard.