I make a point of having my passengers see me turn my cell phone off and then 
toss it in my flight bag before I climb into the plane.  I expect them to do 
the same.  I'd rather spend my time flying instead of trying to prove that PEDs 
will not interfere with the VOR, GPS or Comm radios.

Ghery S. Pettit

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Ken Javor
Sent: Sunday, March 18, 2012 7:43 PM
To: [email protected]
Subject: Re: New immunity testing by the FAA in the future?

In terms of PEDs interfering with aircraft COMM and NAV functions, all that
is necessary for commonality between a test aircraft and the fleet is the
antennas are in the same place. This assumes coax from antennas to receivers
are intact. If we can't make that assumption, then the PEDs cannot be
operate during critical periods, period.
  
Ken Javor
Phone: (256) 650-5261


> From: Brian Oconnell <[email protected]>
> Reply-To: <[email protected]>
> Date: Sun, 18 Mar 2012 17:26:19 -0700
> To: 'Pat Lawler' <[email protected]>, <[email protected]>
> Subject: RE: New immunity testing by the FAA in the future?
> 
> Cannot be done with any reasonable efficacy for commercial aviation. No
> combo of aircraft type, instrument model/version, wiring harness version,
> etc is duplicated after about 6 operational months after aircraft has left
> factory.
> 
> As private pilot driving small SELs, I have had two instances of
> interference: an old cell phone and a laptop computer. The phone antenna was
> not seated causing VOR receiver weirdness, and the computer's USB cable was
> broken causing the panel-mounted GPS to give bad numbers.
> 
> And emissions limits have no meaning for any particular end use - had a
> customer complain about AM radio reception where the tested design has 15dB
> margin. Re-test indicated 11dB margin after 30 months in field *WITH*
> incorrect wiring, and that signal reception at the 'donut shop' was outside
> of the station's intended audience.
> 
> EMC = early mind-capacity loss syndrome for compliance engineers.
> 
> Brian
> 
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]On Behalf Of Pat
> Lawler
> Sent: Sunday, March 18, 2012 4:54 PM
> To: [email protected]
> Subject: New immunity testing by the FAA in the future?
> 
> Almost sounds like a whole new industry -- the business of testing
> aircraft for immunity to personal electronic devices:
>   http://bits.blogs.nytimes.com/2012/03/18/disruptions-time-to-review-f-a-a-
> policy-on-gadgets/
> 
> Pat Lawler
> 
> -
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