System separation: EWIS.

CFR · 2024-01-01 · US · Title 14

(a) Each EWIS must be designed and installed with adequate physical separation from other EWIS and airplane systems so that an EWIS component failure will not create a hazardous condition. Unless otherwise stated, for the purposes of this section, adequate physical separation must be achieved by separation distance or by a barrier that provides protection equivalent to that separation distance. (b) Each EWIS must be designed and installed so that any electrical interference likely to be present in the airplane will not result in hazardous effects upon the airplane or its systems. (c) Wires and cables carrying heavy current, and their associated EWIS components, must be designed and installed to ensure adequate physical separation and electrical isolation so that damage to circuits associated with essential functions will be minimized under fault conditions. (d) Each EWIS associated with independent airplane power sources or power sources connected in combination must be designed and installed to ensure adequate physical separation and electrical isolation so that a fault in any one airplane power source EWIS will not adversely affect any other independent power sources. In addition: (1) Airplane independent electrical power sources must not share a common ground terminating location. (2) Airplane system static grounds must not share a common ground terminating location with any of the airplane's independent electrical power sources. (e) Except to the extent necessary to provi

official document · source cfr-2024 · id 14:§ 25.1707