Text in force at 25-153: from 25-123, effective 10 Dec 2007.
[(a) EWIS components used for electrical bonding and protection against static electricity must meet the requirements of Sec. 25.899.
(b) On airplanes having grounded electrical systems, electrical bonding provided by EWIS components must provide an electrical return path capable of carrying both normal and fault currents without creating a shock hazard or damage to the EWIS components, other airplane system components, or airplane structure.]
72 FR 63406 · Source