On Wed, 10 Feb 2016 16:27:09 -0700, BobW wrote:

Dave, wow - what timing!

On 2/10/2016 3:32 PM, Dave Nadler wrote:
Snip...

Anyway, someone mentioned to me years ago that it is a bad idea to
mount things on the canopy or canopy rails (PDA, Camera, etc) as it
could prevent full ejection of the canopy and leave it tethered to the
fuselage by a power or control cable. This could make a bad situation
worse (take that statement for what it is worth). Truth or myth?

Truth, implicated in at least one fatality (PDA mount prevented canopy
jettison).

Having just spent most of the day extracting info related to every
2000-2015 glider-based fatality from the NTSB database (and, yeah, I'm
pretty familiar with how much crunch-related info can manage to never
make it into their reports and conclusions), I'm curious as to year and
country of the above fatality. It doesn't seem to ring a mental bell
from my day's work.

There was a mid-air in the UK (Yorkshire) in 2006. One pilot got out, the
other didn't. http://news.bbc.co.uk/1/hi/england/6158561.stm

The AAIB report said that latter had electronics mounted on his glare
shield and canopy frame, cables secured with cable ties. The ASW-19B, hit
the ground with part of the canopy still attached. The front jettison
lock had been released, rear locking pins still locked.


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martin@ | Martin Gregorie
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