EWIS Certification and FAA DER Support

Lectromec helps aircraft OEMs, STC applicants, and eVTOL developers prepare defensible EWIS certification packages for FAA review. With an on-staff FAA EWIS Designated Engineering Representative (DER), in-house engineering analysis, and ISO/IEC 17025 accredited EWIS component testing, Lectromec supports EWIS compliance from early planning through certification data approval or recommendation.

Lectromec has supported EWIS certification packages for Part 25 TC and STC programs with EWIS needs related to 25.17xx requirements as well as fuel tank ignition / fuel tank explosion prevention requirements under 14 CFR 25.981.

Who We Support

Lectromec supports EWIS certification needs for:

• Aircraft OEMs developing new aircraft or new electrical architectures
• STC applicants modifying existing Part 25 aircraft
• eVTOL and powered-lift developers addressing high-voltage wiring, distributed propulsion, battery system wiring, and certification-basis-specific EWIS concerns
• Engineering and certification teams responding to FAA questions on separation, safety assessment, flammability, ICAs, EZAP, or test evidence

For eVTOL and powered-lift programs, Lectromec can support EWIS-related compliance evidence where the certification basis includes Part 25-derived, equivalent safety, high-voltage, installation, or continued-airworthiness requirements.

EWIS Certification Services

Lectromec can support:

• EWIS certification strategy and compliance planning
• Project Specific Certification Plan support
• Part 25 Subpart H compliance matrix development
• EWIS design, installation, analysis, and maintenance compliance review
• FAA coordination and comment response support
• Test plans, test witnessing, and certification test reports
• Wire, cable, connector, harness, and EWIS component testing
• FAA Form 8110-3 approval or recommendation within delegated authority
• Instructions for Continued Airworthiness and EZAP support
• Full EWIS certification support when a program needs planning, analysis, testing, verification, and documentation

Testing and Certification Evidence

EWIS certification depends on credible evidence. Lectromec’s engineering team is supported by an ISO/IEC 17025 accredited laboratory capable of performing electrical, mechanical, environmental, thermal, and chemical testing for aircraft wire, cable, and EWIS component evaluations.

That means certification teams can combine compliance planning, analysis, testing, and DER review through one EWIS-focused partner.

The delegated authority of Lectromec’s DERs spans 16 sections of 14 CFR Part 25, Subpart H:

● delegated authority  ·  R recommendation for approval