Pilot's Guide to Avionics 2015-16 Edition - 35

The letter of agreement question:
Where is an LOA needed?
Currently - and this can be a moving target - the FAA
does not require an LOA for ADS-B Out operations in
U.S. airspace but the requirements exist elsewhere in the
world. To that end, Advisory Circular 90-114 states that all
U.S. operators must receive FAA authorization to conduct
international ADS-B Out operations, either in the form of
the original LOA process, A353, or its replacement from
August 2014, A153. But regional authorizations may apply,
so check the nation you plan to visit.
Currently, neither the U.S., Australia or Fiji require an
LOA for ADS-B Out operations, but that may change as
ADS-B systems grow internationally.
Several regions of China, Hong Kong, Singapore and
Vietnam do require an LOA; these nations and Canada
have a conditional requirement in effect, usually based on
airspace or specific routes.
Meanwhile, the list of countries requiring LOA and any

Internal Mix-and-Match Electronic Components

conditions in effect may grow. The Aircraft Electronics
Association and the FAA can both help affirm whether a
nation on your itinerary enforces the LOA requirement.
Which LOA? A353 or A153?
Heeding two years of complaints about an overly
lengthy, complicated process moved the FAA to enact a
new LOA for international ADS-B Out needs - A153. The
new form not only superseded the original - A353 - the
new process also reduced the overall requirements, simplified the process and moved approval back to FSDO
inspectors from the regional offices where the agency originally vested approvals of A353 applications.
The change was an answer to those complaints and
a sluggish process for approving applications. For international use, however, either LOA works. So unless an
operator has an application pending under A353, A153 is
the way to go, according to avionics shops and operators
who've completed the process. q

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- 35 -


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Table of Contents for the Digital Edition of Pilot's Guide to Avionics 2015-16 Edition

Pilot's Guide to Avionics 2015-16 Edition - Inro
Pilot's Guide to Avionics 2015-16 Edition - Cover1
Pilot's Guide to Avionics 2015-16 Edition - Cover2
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Pilot's Guide to Avionics 2015-16 Edition - Cover3
Pilot's Guide to Avionics 2015-16 Edition - Cover4
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