View Latest Blog Entries
Close
Categories
Testing & Assessment Certification Aging Wires & Systems Management Standard & Regulation Research Conference & Report Protection & Prevention Arcing Maintenance & Sustainment Miscellaneous
Popular Tags
Visual Inspection MIL-HDBK FAR MIL-HDBK-525 AS50881 FAR 25.1707 Wire System FAR 25.1709 Degradation High Voltage Electromagnetic Interference (EMI) Circuit Protection
All Tags in Alphabetical Order
Accelerated Aging Aging Systems Aircraft Power System Aircraft Service Life Extension Program (SLEP) Arc Fault (AF) Arc Fault Circuit Breaker (AFCB) Arc Track Resistance Arcing Damage AS22759/87 AS4373 AS4373 Method 704 AS50881 AS5692 AS6019 AS85485 AS85485 Wire Standard ASTM F2799 Automated Wire Testing System (AWTS) Bent Pin Analysis Best of Lectromec Best Practice Cable cable testing Carbon Nanotube (CNT) Certification Chafing Chemical Testing Circuit Breaker Circuit Protection Coaxial cable Compliance Conductor Connector connectors contacts Corona Corrosion Corrosion Preventing Compound (CPC) Cracking D-sub Degradation Delamination Derating Distributed Power System DO-160 Electrical Aircraft Electrical Component Electrical Testing Electromagnetic Interference (EMI) Electromagnetic Vulnerability (EMV) EMF EN3475 Energy Storage Environmental Environmental Cycling EWIS Component EWIS Design EWIS Failure EWIS Thermal Management EZAP FAA AC 25.27 FAA AC 25.981-1C Failure Database Failure Modes and Effects Analysis (FMEA) FAR FAR 25.1703 FAR 25.1707 FAR 25.1709 Flammability Flex Testing Forced Hydrolysis fuel tank ignition Fundamental Articles Future Tech Green Taxiing Hazard Analysis High Voltage Hot Stamping Humidity Variation Insulation IPC-D-620 ISO 17025 Certified Lab Laser Marking Maintenance Maintenance costs Mandrel Mechanical Testing MIL-C-38999 MIL-C-85485 MIL-DTL-17 MIL-DTL-3885G MIL-DTL-38999 MIL-E-25499 MIL-HDBK MIL-HDBK-1646 MIL-HDBK-454 MIL-HDBK-516 MIL-HDBK-522 MIL-HDBK-525 MIL-HDBK-683 MIL-STD-1560 MIL-T-7928 MIL-W-22759/87 MIL-W-5088 Military 5088 modeling MS3320 NASA NEMA27500 No Fault Found Outgassing Overheating of Wire Harness Parallel Arcing Performance Physical Testing Polyimide-PTFE Power systems Probability of Failure Product Quality Radiation Red Plague Corrosion Reduction of Hazardous Substances (RoHS) Reliability Research Rewiring Project Risk Assessment SAE Separation Requirements Series Arcing Service Life Extension Severe Wind and Moisture-Prone (SWAMP) Severity of Failure Shielding Solid State Circuit Breaker Space Certified Wires Sustainment Temperature Rating Temperature Variation Test methods Test Pricing Testing Thermal Circuit Breaker Thermal Endurance Thermal Index Thermal Shock Thermal Testing Tin plated conductors UAVs Visual Inspection Wire Ampacity Wire Certification Wire Comparison Wire System Wire Verification

Maintenance & Sustainment

Updating Periodic Maintenance Procedures

An area of aircraft maintenance and wire system sustainment which has been around for the last decade is the enhanced zonal analysis procedures, or EZAP for short. EZAP is a set of procedures developed by the FAA during the 2000s detailing a systematic process for handling of wiring system maintenance based on zones. Lectromec has […] Read more

Can the EWIS be Safe After a Modification?

The days of ‘fit and forget’ EWIS are at least a decade behind, the aircraft industry’s understanding of the implications of wiring as a system continues to evolve. New aircraft have gone through EWIS evaluations to ensure that the EWIS complies to regulations – not an easy task. Obviously, as the OEM design choices remain […] Read more

Standard Practice for Maintenance of Aircraft Electrical Wiring Systems

An industry as broad as the aerospace industry will have a variety of standards and recommended practices. The hope is that each standard brings something new through either a higher level of requirements or by providing better guidance to achieve a reliable aircraft. The ASTM Standard F2799 was written with the intention of being, “used […] Read more

EWIS SLEP Reassessment

In past articles, we have talked about a comprehensive assessment of Electrical Wire Interconnected System (EWIS) Service Life Extension Program (SLEP) that is possible with following the guidance laid out in MIL-HDBK-525. One of the areas that Lectromec did not cover thoroughly in these articles is what to do five or ten years after the […] Read more

A case study addressing EWIS sustainment needs

This white paper is a case study on recent work performed by Lectromec for the U.S. military to achieve Electrical Wire Interconnection Systems (EWIS) sustainment of an aircraft fleet. Read more

EWIS system design: Aircraft wire maintainability

The SAE Wire Installation Guidance document, AS50881, provides guidance on considerations for designing an aircraft wiring system. In this article, we examine sections of the AS50881 and discuss how each of these sections should be addressed and what factors should be considered when designing an aircraft’s Electrical Wire Interconnection System (EWIS). For this area, there […] Read more

Trends in aircraft wiring and risk assessment with John Ashour

The purpose of the Lectromec Podcast is to keep you informed of trends in the rapidly changing aerospace industry. Once a month we interview leaders and seek their insight on topics related to Aircraft Electrical Wiring Interconnection System (EWIS), wire testing, and risk assessment for aerospace. Today’s interview is with the President of InterConnect Wiring […] Read more

Aircraft EWIS failure trends

The process for identifying an EWIS problem on an aircraft often follows these steps: At some point during aircraft operation a system malfunctions and the pilot reports the malfunction. Maintenance starts by replacing the system component. Depending on schedule and criticality, the maintenance action is scheduled. Often, the first action to be taken is the […] Read more

When should you consider adopting an aircraft wire life extension program? Part I

Editor’s Note: This is the first part in a series of articles that addresses the needs of EWIS analysis and aging aircraft. In the course of planning for your aircraft wire life extension program, eventually it becomes necessary to considering the wire system health. Like all other system components, wires (particularly the wire insulation) degrade […] Read more