Avionics News May 2018 - 37

Photo courtesy of Honeywell

In fact, weather radar is the only
"That's why troubleshooting
display in the cockpit that's open for
radar is so complicated. You
UNFORTUNATELY,
the operator's interpretation. How
have a mix of mechanical,
many times has an aircraft owner
electrical and visual. There
WEATHER RADAR
come into a shop and said, "My radar
may not be an actual fault, but
ALSO IS ONE OF
just doesn't look right." Or, "I saw
something may be happening
a storm outside the window, but the
that's not expected, which then
radar didn't show anything." Nobody
makes it even more challenging
ever questions their GPS.
to find the cause of the issue."
Because of this, and other factors,
And don't forget the evereffectively troubleshooting a radar
present human factors in the
problem is often compared to
equation. "Sometimes, flight
unraveling a golf ball - the solution
crews misinterpret radar
is often a case of one thing leading to
displays or the lack of them on
another.
the screen and assume there is
"I've worked on radar for 34
a problem with the system,"
years and, in some ways, it's like other avionics, and
said David Syms, radar products marketing director
in other ways, it's not," stated Jim Cahoon, senior
for Honeywell. "If maintenance crews cannot correlate
systems engineer for Rockwell Collins. "You have a
a hard failure of the system to the write-ups from the
mix of electronic boxes and mechanical servo motors
crew after performing ground tests, it can cause a lot
and gear systems. Some systems have older-generation
of frustration and confusion."
high-power magnetrons, and others have lower-power
digital transmitters.
Continued on following page

THE MOST
COMPLEX AND
MISUNDERSTOOD
PIECES OF
EQUIPMENT ON
AN AIRPLANE.

avionics news

*

may

2018

37



Table of Contents for the Digital Edition of Avionics News May 2018

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Avionics News May 2018 - Cover1
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Avionics News May 2018 - 1
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Avionics News May 2018 - Cover3
Avionics News May 2018 - Cover4
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