EZAP, the FAA, and the electrical wiring interconnection system (EWIS)

May 17, 2011 Michael Traskos

The Enhanced Zonal Awareness procedure (EZAP) was introduced to the aviation industry that applies to Electrical Wire Interconnection System in 2005 was part of the FAA’s Notice of Proposed Rulemaking (NPRM) that covered new requirements for the assessments of new and existing aircraft (the final rule was enacted in 2007). This required existing fleet operators […] Read more

FAA wire incidents report: February 2009

September 1, 2009 Lectromec Team

The following are examples of a FAA Wire Incidents Report.These are the wire incidents reported in the FAA’s February 2009 Advisory Circular 43-16A – Alert Number 367. Incident # 1 Aircraft Make: Aerospace Technology Aircraft Model: ATR42* Part Name: Wire Harness Part Condition: Damaged Part Location: Engine The engine experienced repeated events of torque fluctuations […] Read more

Use of aircraft “shelf wire” and aircraft wire life projection

May 26, 2008 Lectromec Team

Suppose that your customer wants to know if the wiring in the cables, harnesses, or devices that your company produced is good. What if they have questions about aircraft wire life projection. Perhaps the cable that you used was a MIL-spec wire, but had been on the shelf or in the manufacturing plant for a number […] Read more

EWIS evaluation of F-16

May 1, 2007 Michael Traskos

You may ask about EWIS evaluation of aircraft of a F-16. The results of recent testing indicated a rate of 5.4 breaches per 1000 feet of wire tested. Lectromec and InterConnect Wiring, at the 10th Aging Aircraft Conference, delivered a report describing a recently completed series of tests to evaluate the status of wire harnesses removed […] Read more

Improving aerospace wire reliability by understanding arcing vs protection schemes

February 1, 2006 Lectromec Team

Prior to the launch of the space shuttle Discovery in July of 2005, NASA engineers discovered a previously unidentified hazard. Perhaps they should have gotten a better understanding of aerospace wire reliability. Power wires leading to a heater in the space shuttle were collocated with wires controlling the reaction jets used for in-orbit maneuvers. There were […] Read more

Understanding aircraft wire differentiation to improve EWIS

July 1, 2005 Lectromec Team

The amount of aircraft wire on a civil aircraft has increased in recent decades such that today’s typical aircraft has hundreds of miles of wire connecting all of its subsystems. The increase in the amount of wire on an aircraft, coupled with weight concerns, has lead to progressively thinner and lighter insulation materials. Wires used on […] Read more

The importance of visual inspection for aircraft wire reliability

April 1, 2004 Lectromec Team

Thorough visual inspections of your aircraft’s wiring should be done on a regular basis to improve wire reliability. Even new aircraft can have wiring that was damaged during the manufacture and outfitting of the plane […] Read more

The life of an aircraft wire and aircraft wire degradation

February 1, 2004 Lectromec Team

Aircraft age and new problems develop that impact the life of an aircraft wire. Fatigue, corrosion, and wire degradation are the three major causes of concern. Wiring degradation causes intermittent malfunctions and can pose a smoke and fire hazard. A Wire Maintenance Program allows the aircraft maintenance department to be sure that the wiring has not become […] Read more

Visual Inspection