maintenance managers conference 2015 2015 ewis... · ewis • what is ewis? • the electrical...
TRANSCRIPT
Maintenance ManagersConference
2015
Maintenance ManagersConference
2015
Rich Bean
• 28 Years in Aviation
• 21 Years Active Duty Military
E&E Technician
QA
Field Instructor
• Director, Operations
1:30 pm – 2:20 pm
Session Time
Electrical Wiring Interconnect SystemEWIS
EWIS
Discussion Points
• What is Electrical Wiring Interconnect System(EWIS)?
• History
• Training
• Best Practices
• NextTech
• Summary
EWIS
• What is EWIS?
• The Electrical Wiring Interconnect System or“Electrical system” means those parts of the aircraftthat generate, distribute and use electrical energy,including their support and attachments
History
• In the late 1990’s wiring concerns were raised due toaccidents and incidents (TWA 800 mid-air explosion,Swiss Air 111 electrical arcing from an inflightentertainment system)
• These disasters prompted the review of commercialwiring policies and the formation of Aging TransportSystems Rulemaking Advisory Committee(ATSRAC) as well as small business fundedopportunities by the FAA, NASA, NAVAIR and others
Investigation
• ATSRAC Investigated 5 areas (phase I)
Fleet Condition
Fleet Service History
Maintenance Criteria
Standard Practices for Wiring
Inspection and Repair Training
• Investigation, findings and recommendationschanged the way we view EWIS
Investigation
• EWIS systems should be treated as a system
• General findings identified wiring is effected by:
Design
Maintenance
Repair
Environment
Age
Training
• Wiring is not immortal and degrades over time
Degradation
• EWIS Degradation is a process that is a function ofmany variables:
Age
Environment
Physical properties
Installation
Maintenance
Degradation
• Causes of EWIS Degradation
Time
Vibration
Moisture
Maintenance
Indirect damage
Chemical contamination
Heat
installation
Best Practices
• How do we apply the lessons learned to ensure one ofthe most critical systems (EWIS) is being properlymaintained and inspected?
• Training AC 120-94
• EWIS Best Practices Job Aid
• Standard Wiring Practice Manual
Training
• Developing a Training Program (AC 120-94)
Objective is to help organizations standardize anEWIS training program that ensures properprocesses and procedures when performingmaintenance, preventive maintenance and repairof EWIS
Developed for eight different target groups
Essential elements for the training program:
• Train to the appropriate level by providinginitial and refresher training
Training
• Target Groups 1-4
Group 1: Personnel performing EWISmaintenance
Group 2: Personnel performing EWISinspections
Group 3: Personnel performing EWISengineering on in-service aircraft
Group 4: Personnel performing generalmaintenance / inspections not involving EWIS
Training
• Target Groups 5-8
Group 5: Personnel performing otherengineering or planning work on in-serviceaircraft
Group 6: Other service staff with duties inproximity to EWIS
Group 7: Flight Deck Crew
Group 8: Cabin Crew
Training
• EWIS Curriculum
Module A: General EWIS practices
Module B: Wiring practices documentation
Module C: Inspection
Module D: Housekeeping
Module E: Wire
Module F: Connective devices
Module G: Connective devices repair
• Module C: Inspection
General visual inspection (GVI)
Detailed inspection (DET)
Special detailed inspection (SDI)
zonal inspection criteria and standards
Group 1 Training
• Module C: Inspection Cont.
Human factors in inspection
Zonal areas of inspection
Wiring system damage
Group 1 Training
Group 1 Training
• Module D: Housekeeping
Airplane external contamination sources
Airplane internal contamination sources
Other contamination sources
Contamination protection planning
Protection during airplane maintenance andrepair
Cleaning process
Group 1 Training
• Module E: Wire
Wire identification, type and construction
Insulation qualities and damage limits
Inspection criteria and standards for wire andwire bundles
Wire bundle installation practices
Group 1 Training
• Module E: Wire Cont.
Typical damage and areas found
Maintenance and repair procedures
Sleeving
Unused wires-termination and storage
Electrical bonding and grounding
Best Practices
• Aircraft Maintenance Manual
• Aircraft Standard Wiring Practices Manual
• FAA Aircraft Wiring Practices Job Aid
Federal AviationAdministration
AircraftWiringPractices(Job Aid)
NextTech What is the future for Aviation Technicians
Complex systems
Advanced Skill Requirements
Highly Integrated EWIS systems
SUMMARY
EWIS History
Organizational Training
Best Practices
NextTech
Nice picture with music
Thank you!