AMC
25.777(c) Full and unrestricted movement of cockpit controls
ED
Decision 2019/013/R9/013/R
1. General
CS 25.777(c) requires cockpit controls to be located and arranged so that full and unrestricted movement of each control can be made by the minimum flight crew. The use of the controls shall be evaluated for pilots across the range of statures required by CS 25.777(c). This evaluation should take into account foreseeable normal and failure conditions.
2. Rudder and brake controls
Particular attention should be paid to rudder and brake controls. The control movement of the rudder pedals and brake pedals should be evaluated in order to ensure that full use can be made of all the available controls in the event of an engine failure, including on take-off and including engine failure at low speeds below VMCG.
The evaluation should ensure that each member of the flight crew is always able to apply full rudder and maximum brake pressure on the same side simultaneously (e.g. full right rudder with maximum right brake pressure, and vice versa). Furthermore, the ergonomics of the design should be such that:
a) the flight crew members can, in each condition, continue to apply brake pressure on the opposite side; and
b) inadvertent brake application on the opposite side is precluded.
This evaluation should ideally be performed in a representative simulator, but it may also be performed statically in a representative cockpit.
[Amdt
No: 25/23]
Cockpit control movement for large airplanes must allow pilots of all statures full, unrestricted use, especially rudder and brakes. Evaluations, ideally in a simulator, should ensure simultaneous full rudder and maximum brake application is possible during engine failure scenarios, preventing inadvertent opposite side braking.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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