Avionics News June 2014 - 59

ADS-B Essentials: Part 2

Frequently asked questions
about ADS-B avionics installations
What are the rules?
The Federal Aviation Administration published
two rules in the Code of Federal Regulations in May
2010: 14 CFR 91.225 and 14 CFR 91.227. Effective
Jan. 1, 2020, aircraft operating in the airspace
defined in 14 CFR 91.225 are required to have an
ADS-B system to include a certified position source
capable of meeting the requirements defined in 14
CFR 91.227. Aircraft operating in Class A airspace
- from 18,000 feet mean sea level to and including
Flight Level 600 - must broadcast position data
using Mode S, 1090 ES. Aircraft operating in
designated airspace exclusively below 18,000 feet
MSL can broadcast the required information using
either 1090 ES or a UAT on 978 MHz.
While the compliance deadline is 2020, the FAA
is encouraging owners to equip their aircraft with
ADS-B well before the mandate goes into effect.
The improvement in situational awareness for pilots
greatly increases safety.
Which type of ADS-B equipment should
an avionics shop install?
There are two types of ADS-B systems:
1.

Mode S transponder-based equipment certified
to technical standard order (TSO)-C166b.

2.

UAT equipment certified to TSO-C154c.

If an aircraft owner plans to operate above FL 180
or internationally, he or she should be equipped with
Mode S Transponder.
If an owner plans to operate only below FL 180
within U.S. airspace, he or she can equip with
Mode S transponder or with UAT equipment. UAT
equipment provides the ability to receive traffic and
weather data from two no-cost broadcast services,

TIS-B and FIS-B. TIS-B can be received on 1090
MHz, but not FIS-B.
Which type of position source should
an avionics shop install?
The FAA recommends a TSO-C145 or TSOC146-compliant WAAS GPS. These units are
readily available for general aviation and provide
sufficient performance to meet the 14 CFR 91.227
requirements. General aviation avionics vendors
offer stand-alone receivers and package them with
the ADS-B transmitter or with a GPS navigator.
Can an avionics shop match any ADS-B
equipment with any GPS equipment?
No, an ADS-B transmitter must be compatible
with its installed GPS receiver. ADS-B equipment
manufacturers are beginning to identify this
compatibility (see the list on page 61). Mixing
GPS systems with ADS-B units in the field is not
permitted unless the equipment combination is shown
to be compatible via a previous FAA certification
effort, e.g., supplemental type certificate. Contact
the manufacturer to learn which GPS systems are
approved for a particular ADS-B system.
Some manufacturers are marketing
uncertified ADS-B transmitters.
Can these be installed?
Aircraft owners may install an uncertified
transmitter on an amateur-built aircraft with an
experimental airworthiness certificate. The FAA,
however, strongly discourages the use of uncertified
ADS-B Out equipment even in experimental aircraft.
Uncertified equipment, including uncertified

Continued on following page
avionics news

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june

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Avionics News June 2014

Table of Contents for the Digital Edition of Avionics News June 2014

Point of Communication
AEA Now
The View from Washington
International News and Regulatory Updates
Standby Glass
Member Profile
Moving Forward
Ongoing Evolution
ADS-B Installations are Beginning to Take Off
Member Profile
What's Working?
Business Basics
Seven Signs it's Time to Use a Collection Agency
What's New
Marketplace Classifieds
Avionics News June 2014 - Intro
Avionics News June 2014 - Cover1
Avionics News June 2014 - Cover2
Avionics News June 2014 - 1
Avionics News June 2014 - 2
Avionics News June 2014 - 3
Avionics News June 2014 - Point of Communication
Avionics News June 2014 - 5
Avionics News June 2014 - AEA Now
Avionics News June 2014 - 7
Avionics News June 2014 - 8
Avionics News June 2014 - 9
Avionics News June 2014 - 10
Avionics News June 2014 - 11
Avionics News June 2014 - 12
Avionics News June 2014 - 13
Avionics News June 2014 - The View from Washington
Avionics News June 2014 - 15
Avionics News June 2014 - International News and Regulatory Updates
Avionics News June 2014 - 17
Avionics News June 2014 - 18
Avionics News June 2014 - 19
Avionics News June 2014 - Standby Glass
Avionics News June 2014 - 21
Avionics News June 2014 - 22
Avionics News June 2014 - 23
Avionics News June 2014 - Member Profile
Avionics News June 2014 - 25
Avionics News June 2014 - 26
Avionics News June 2014 - 27
Avionics News June 2014 - Moving Forward
Avionics News June 2014 - 29
Avionics News June 2014 - 30
Avionics News June 2014 - 31
Avionics News June 2014 - 32
Avionics News June 2014 - 33
Avionics News June 2014 - 34
Avionics News June 2014 - 35
Avionics News June 2014 - 36
Avionics News June 2014 - 37
Avionics News June 2014 - 38
Avionics News June 2014 - 39
Avionics News June 2014 - 40
Avionics News June 2014 - 41
Avionics News June 2014 - 42
Avionics News June 2014 - 43
Avionics News June 2014 - 44
Avionics News June 2014 - 45
Avionics News June 2014 - 46
Avionics News June 2014 - 47
Avionics News June 2014 - 48
Avionics News June 2014 - 49
Avionics News June 2014 - Ongoing Evolution
Avionics News June 2014 - 51
Avionics News June 2014 - 52
Avionics News June 2014 - 53
Avionics News June 2014 - 54
Avionics News June 2014 - 55
Avionics News June 2014 - ADS-B Installations are Beginning to Take Off
Avionics News June 2014 - 57
Avionics News June 2014 - 58
Avionics News June 2014 - 59
Avionics News June 2014 - 60
Avionics News June 2014 - 61
Avionics News June 2014 - 62
Avionics News June 2014 - 63
Avionics News June 2014 - Member Profile
Avionics News June 2014 - 65
Avionics News June 2014 - What's Working?
Avionics News June 2014 - 67
Avionics News June 2014 - 68
Avionics News June 2014 - 69
Avionics News June 2014 - Business Basics
Avionics News June 2014 - 71
Avionics News June 2014 - 72
Avionics News June 2014 - 73
Avionics News June 2014 - 74
Avionics News June 2014 - 75
Avionics News June 2014 - Seven Signs it's Time to Use a Collection Agency
Avionics News June 2014 - 77
Avionics News June 2014 - 78
Avionics News June 2014 - 79
Avionics News June 2014 - What's New
Avionics News June 2014 - 81
Avionics News June 2014 - 82
Avionics News June 2014 - 83
Avionics News June 2014 - 84
Avionics News June 2014 - 85
Avionics News June 2014 - Marketplace Classifieds
Avionics News June 2014 - 87
Avionics News June 2014 - 88
Avionics News June 2014 - Cover3
Avionics News June 2014 - Cover4
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