Avionics News April 2012 - 40

industry

Aircraft Electrical Wiring
What’s Going on Behind the Panel?
B y J o H n D . r u l e y

hen customers call an avionics shop or turn up unexpectedly on the ramp, wiring’s apt to be the last thing on their mind. Instead, they’re focused on the latest glass upgrades, or on fixing whatever just broke. But, all the sensors, instruments, computers and servos that make up modern avionics systems are connected to each other, power and ground using wire and cable. And, with the average age of general aviation aircraft approaching 40 years, according to the Federal Aviation Administration’s Best Practices Guide for Maintaining Aging General Aviation Airplanes, a lot of that wiring needs work. Even the airlines, which tend to fly newer airplanes, have been affected. Wiring problems were implicated in at least two major heavy accidents – TWA flight 800 in 1996, and Swissair flight 111 in 1998. What does this mean for avionics technicians and shops? When an airplane turns up for work – whether planned or not – wiring will be an issue. Before quoting a job, it’s a good idea to carry out an inspection. What kind of wire is behind the panel, and what condition is it in?
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Avionics News April 2012

Table of Contents for the Digital Edition of Avionics News April 2012

Point of Communication
AEA Now
The View from Washington
International News and Regulatory Updates
Datalink Weather
Member Profile
Where Are They Now?
Before & After
Phoebe Fairgrave Omlie
A Conversation With...
Aircraft Electrical Wiring
Meet the AEA Staff
Member Profile
The AEA Ambassador Program
Business Basics
Pro-to-col
Industry Profile
Theory & Practice
What's New
Marketplace Classifieds
Avionics News April 2012 - Cover1
Avionics News April 2012 - Cover2
Avionics News April 2012 - 1
Avionics News April 2012 - 2
Avionics News April 2012 - 3
Avionics News April 2012 - Point of Communication
Avionics News April 2012 - 5
Avionics News April 2012 - AEA Now
Avionics News April 2012 - 7
Avionics News April 2012 - 8
Avionics News April 2012 - 9
Avionics News April 2012 - 10
Avionics News April 2012 - 11
Avionics News April 2012 - 12
Avionics News April 2012 - 13
Avionics News April 2012 - 14
Avionics News April 2012 - 15
Avionics News April 2012 - The View from Washington
Avionics News April 2012 - 17
Avionics News April 2012 - International News and Regulatory Updates
Avionics News April 2012 - 19
Avionics News April 2012 - Datalink Weather
Avionics News April 2012 - 21
Avionics News April 2012 - 22
Avionics News April 2012 - 23
Avionics News April 2012 - Member Profile
Avionics News April 2012 - 25
Avionics News April 2012 - 26
Avionics News April 2012 - 27
Avionics News April 2012 - Where Are They Now?
Avionics News April 2012 - 29
Avionics News April 2012 - 30
Avionics News April 2012 - 31
Avionics News April 2012 - 32
Avionics News April 2012 - Before & After
Avionics News April 2012 - Phoebe Fairgrave Omlie
Avionics News April 2012 - 35
Avionics News April 2012 - 36
Avionics News April 2012 - 37
Avionics News April 2012 - A Conversation With...
Avionics News April 2012 - 39
Avionics News April 2012 - Aircraft Electrical Wiring
Avionics News April 2012 - 41
Avionics News April 2012 - 42
Avionics News April 2012 - 43
Avionics News April 2012 - 44
Avionics News April 2012 - 45
Avionics News April 2012 - Meet the AEA Staff
Avionics News April 2012 - 47
Avionics News April 2012 - 48
Avionics News April 2012 - 49
Avionics News April 2012 - Member Profile
Avionics News April 2012 - 51
Avionics News April 2012 - 52
Avionics News April 2012 - 53
Avionics News April 2012 - The AEA Ambassador Program
Avionics News April 2012 - 55
Avionics News April 2012 - 56
Avionics News April 2012 - 57
Avionics News April 2012 - 58
Avionics News April 2012 - 59
Avionics News April 2012 - Business Basics
Avionics News April 2012 - 61
Avionics News April 2012 - 62
Avionics News April 2012 - 63
Avionics News April 2012 - 64
Avionics News April 2012 - 65
Avionics News April 2012 - Pro-to-col
Avionics News April 2012 - 67
Avionics News April 2012 - 68
Avionics News April 2012 - 69
Avionics News April 2012 - Industry Profile
Avionics News April 2012 - 71
Avionics News April 2012 - 72
Avionics News April 2012 - 73
Avionics News April 2012 - Theory & Practice
Avionics News April 2012 - 75
Avionics News April 2012 - 76
Avionics News April 2012 - 77
Avionics News April 2012 - 78
Avionics News April 2012 - 79
Avionics News April 2012 - What's New
Avionics News April 2012 - 81
Avionics News April 2012 - 82
Avionics News April 2012 - 83
Avionics News April 2012 - 84
Avionics News April 2012 - 85
Avionics News April 2012 - Marketplace Classifieds
Avionics News April 2012 - 87
Avionics News April 2012 - 88
Avionics News April 2012 - Cover3
Avionics News April 2012 - Cover4
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