Pilot's Guide to Avionics 2015-16 Edition - 50
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SAFETY PRODUCT PROSPECTS
Continued from page 48
ASTM F3011-13: Genesis for GA angle-of-attack
Install it; log it; calibrate it; and fly it. This new safetyproduct opportunity - for which any Part 23/CAR
(Canadian Aviation Regulations) 3 aircraft is eligible -
may not sound like an attractive business opportunity for
avionics repair shops ... at first blush.
But the actual " install" portion of the process requires
more time and labor than implied.
The expected push to expand AoA use in a war on
errors against LOC accidents will likely yield significant
numbers of pilots interested in adding AoA to aid their
ASTM F3011-13, the document, finalized and submitted
to the FAA for review last year, sets compliance standards
and performance requirements, as well as limits on how
these systems can interface with the aircraft's systems.
For example, an audio-panel connection to use a system's
audible-warning feature is a simple connection and allowed
under the standard the FAA accepted in February 2014.
But a need to interface with a flap-position sensor takes
the system to a different place - and beyond the ASTM
consensus rule the FAA approved.
This leaves what essentially is a simple package to
install, a process complicated more by the architecture of
the airframe than the complexity of the system. Here's a
These common-architecture packages require installing
and connecting three basic common components: First,
a stand-alone air sensor with two pitot-tube-like airpressure tubes connects to the second component, a
central processing brain with a pressure transducer and
other electronics, which in turn must connect to a cockpit
display, the third common component.
The package can interface with the host aircraft's
electrical system for power and, if the option is employed,
to provide power for a heated sensor (to keep it ice free).
The other connection also is optional, albeit desirable
- wiring the main brain's audio-out connection to the
host aircraft's audio panel to provide crew with audible
warnings to change pitch.
This new safety-enhancement option opens a way for
avionics and maintenance shops to help aircraft owners
add a safety enhancement to their flight decks, at relatively
low costs. The installation time will, done correctly,
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