Hi Dave,
I hope you don't mind my responding publicly to your most recent valid
concern expressed privately.
My intent was to convey that ERCO had determined and defined the
difference in "acceptable" (amount considered still safe) play between
a plane with the original aileron counterbalance weights, as described
in ESM 56, and a plane with those weights removed, as described in ESM
57, which also recommends the removal of said weights; and that both
ERCO and CAA representatives were well aware at that time of the
importance of keeping play in the control system below that which could
or would be predictably dangerous in precipitating the precise type of
catastrophic failure that occurred in in the Sebring crash. This
potential was completely understood by all parties to such extent as
was deemed necessary at that time, and that current "reverse
engineering" of a failed spar by the NTSB or FAA must be done so as to
give due consideration to such prior and relevant evaluations as still
exist in related engineering or correspondence files.
Since anyone seriously considering what I say here will go to those
Ercoupe Service Memorandums to verify that I my words are consistent
with the overall context therein, I am not too worried if my choice of
words was less than ideal. The inadvertent omission of the words
"without weights", however, made what I was trying to say
incomprehensible without going to ESM 57.
I would certainly welcome anyone wishing to better clarify my intent in
the comments they submit.
Regards,
WRB
--
On Sep 23, 2009, at 11:11, David Winters wrote:
Bill,
Sentence still does not make sense to me.
Believe it is missing a mandatory modifier for a subject.
--and 5/16"-- for what? For the trailig edge without weights?
Dave
From: William R. Bayne [mailto:[email protected]]
Sent: Wednesday, 23 September, 2009 10:04 AM
To: David Winters
Subject: Re: [ercoupe-tech] ACS August 14, 2009 - In-flight Breakup of
415-D, NTSB ERA09FA087
On Sep 23, 2009, at 08:04, David Winters wrote:
Bill
Typo?
"acceptable aileron play as 7/16" at the trailing edge with the
weights and 5/16" and recommend"
ddw
