X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 10 Feb 2009 18:38:05 -0500 Message-ID: X-Original-Return-Path: Received: from QMTA06.westchester.pa.mail.comcast.net ([76.96.62.56] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3486567 for lml@lancaironline.net; Tue, 10 Feb 2009 15:46:55 -0500 Received-SPF: pass receiver=logan.com; client-ip=76.96.62.56; envelope-from=mjrav@comcast.net Received: from OMTA07.westchester.pa.mail.comcast.net ([76.96.62.59]) by QMTA06.westchester.pa.mail.comcast.net with comcast id EAwn1b0051GhbT856LmKTv; Tue, 10 Feb 2009 20:46:19 +0000 Received: from mjr ([24.2.139.210]) by OMTA07.westchester.pa.mail.comcast.net with comcast id ELmG1b0094YZMW03TLmKTc; Tue, 10 Feb 2009 20:46:19 +0000 X-Original-Message-ID: <005301c98bc0$c7fdcad0$d28b0218@mjr> From: "Mark Ravinski" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: Legacy damaged X-Original-Date: Tue, 10 Feb 2009 15:47:25 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0050_01C98B96.DEA8F5E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1933 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1933 This is a multi-part message in MIME format. ------=_NextPart_000_0050_01C98B96.DEA8F5E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Another two cents from a 360 guy. One of my 4 latches opened in flight once. I've always insisted on = being the one to latch them since. I can see the possibility that someone in a Legacy might have no problem = with uncontrollability one time and have a serious problem on another = occasion. The description, as I read it, suggests an oscillation = happening. So, if in smooth air, a steady handed pilot brings it back = around for landing he might never start this oscillation. Once this = elusive oscillation begins, maybe it is hard to make it stop - or even = impossible. My (small tail) 360 will pitch oscillate on takeoff when heavily loaded = and having an aft CG unless I take steps to prevent it. I suspect an unlatched canopy would aggravate the problem. Having = more speed and some flaps down longer will help. Mark Ravinski 360 1455 hrs on the plane - 1085 of it mine. ----- Original Message -----=20 From: Jim Scales=20 To: lml@lancaironline.net=20 Sent: Tuesday, February 10, 2009 1:32 PM Subject: [LML] Re: Legacy damaged Being an ES flyer I am not really qualified to enter this thread but I = will anyway. Just a tinkerer's thoughts. An item for a checklist on the hinged canopy could be "Check Canopy = Safety Catch". It would refer to a safety chain (or cable) very similar = to that which is used for security on a door in a hotel. I'm sure the = assembly would need to be stronger but the design could be similar, very = simple and pretty well fool proof (as long as it is connected, of = course). I would think this would control the problem, if the latch releases, = by holding the canopy to maximum opening of a couple of inches. No need = to attempt to close it. No electronics. No chance of failure of micro = switches, lights or horns. Very inexpensive. It does not insure that the canopy latches are properly operated but, = if the reports of controllability when the canopy pops are correct, it = would prevent serious problems and allow the plane to be landed safely. = It would also function in the case of a late canopy release such as in = cruise, in which case warning systems would be of little value. If this line of thought has been followed in the past, and found to be = a non-solution, I apologize for taking up space. Just a thought............. Jim Scales ----- Original Message -----=20 From: Bill Kennedy=20 To: lml@lancaironline.net=20 Sent: Monday, February 09, 2009 11:49 PM Subject: [LML] Legacy damaged Forget about winch systems, etc. for the canopy. If it comes open = in-flight, ignore it and land the plane as soon as practical, close the = canopy and go about your business.=20 ------=_NextPart_000_0050_01C98B96.DEA8F5E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Another two cents from a 360 guy.
 
One of my 4 latches opened in flight once.  = I've=20 always insisted on being the one to latch them since.
 
I can see the possibility that someone in a = Legacy might=20 have no problem with uncontrollability one time and have a serious = problem on=20 another occasion.  The description, as I read it, suggests an = oscillation=20 happening.  So, if in smooth air, a steady handed pilot brings it = back=20 around for landing he might never start this oscillation.  Once = this=20 elusive oscillation begins, maybe it is hard to make it stop - or even=20 impossible.
 
My (small tail) 360 will pitch oscillate on=20 takeoff when heavily loaded and having an aft CG unless I take = steps to=20 prevent it.
I suspect an unlatched canopy would aggravate = the=20 problem.    Having more speed = and some=20 flaps down longer will help.
 
Mark Ravinski
360   1455 hrs on the plane - 1085 of = it=20 mine.
----- Original Message -----
From:=20 Jim=20 Scales
Sent: Tuesday, February 10, = 2009 1:32=20 PM
Subject: [LML] Re: Legacy = damaged

Being an ES flyer I am not really qualified to enter this thread = but I=20 will anyway. Just a tinkerer's thoughts.
 
An item for a checklist on the hinged canopy could be "Check = Canopy=20 Safety Catch".  It would refer to a safety chain (or = cable) very=20 similar to that which is used for security on a door in a = hotel. I'm=20 sure the assembly would need to be stronger but the design = could be=20 similar, very simple and pretty well fool proof (as long as it is = connected,=20 of course).
 
I would think this would control the problem, if = the latch=20 releases, by holding the canopy to maximum opening of a couple of=20 inches. No need to attempt to close it. No electronics.  No = chance=20 of failure of micro switches, lights or horns.  Very = inexpensive.
 
It does not insure that the canopy latches are properly operated = but, if=20 the reports of controllability when the canopy pops are = correct, it would=20 prevent serious problems and allow the plane to be landed = safely.  It=20 would also function in the case of a late canopy release such as in = cruise, in=20 which case warning systems would be of little value.
 
If this line of thought has been followed in the past, and found = to be a=20 non-solution, I apologize for taking up space.
 
Just a thought.............
 
Jim Scales
 
 
----- Original Message -----
From: Bill Kennedy
To: lml@lancaironline.net =
Sent: Monday, February 09, = 2009 11:49=20 PM
Subject: [LML] Legacy = damaged

Forget about winch systems, etc. for the canopy. If = it comes=20 open in-flight, ignore it and land the plane as soon as practical, = close the=20 canopy and go about your business.=20
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