Which electrical system components in designated fire zones must be at least fire resistant?

Electrical cables, terminals, and equipment in designated fire zones that are used in emergency procedures must be at least fire resistant.

Which specific CS-25 appendix and part is referenced for testing the self-extinguishing property of electrical wire insulation?

CS-25, Appendix F, Part I (a)(3) is referenced for testing the self-extinguishing property of electrical wire insulation.

CS 29.1359 Electrical system fire and smoke protection

Q: What is the required fire performance for insulation on electrical wire and cable installed in the rotorcraft?

The insulation must be self-extinguishing when tested in accordance with CS-25, Appendix F, Part I (a)(3).

Q: Are electrical cables in designated fire zones required to be fire resistant even if they are not used in emergency procedures?

No, the requirement for fire resistance applies only to electrical cables, terminals, and equipment in designated fire zones that are used in emergency procedures.

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CS 29.1359 Electrical system fire and smoke protection

ED Decision 2003/16/RM

(a) Components of the electrical system must meet the applicable fire and smoke protection provisions of CS 29.831 and 29.863.

(b) Electrical cables, terminals, and equipment, in designated fire zones, and that are used in emergency procedures, must be at least fire resistant.

(c) Insulation on electrical wire and cable installed in the rotorcraft must be self-extinguishing when tested in accordance with CS-25, Appendix F, Part I (a)(3).

Details

Source-Title: CS 29.1359 Electrical system fire and smoke protection View latest amendments

Erulesid: ERULES-1963177438-5668 Compare versions

Domain: Initial airworthiness

Amendedby: Initial issue

Applicabilitydate: 14 November, 2003

Entryintoforcedate: 14 November, 2003

Regulatorysource: ED Decision 2003/16/RM Navigate

Regulatorysubject: CS-29

Typeofcontent: CS (Certification specification)

Origin: EASA

Category: EAR