X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Fri, 10 Jul 2009 11:49:06 -0400 Message-ID: X-Original-Return-Path: Received: from imo-d23.mx.aol.com ([205.188.139.137] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3752160 for lml@lancaironline.net; Fri, 10 Jul 2009 09:43:03 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.137; envelope-from=Sky2high@aol.com Received: from imo-da01.mx.aol.com (imo-da01.mx.aol.com [205.188.169.199]) by imo-d23.mx.aol.com (v107.10) with ESMTP id RELAYIN2-34a57452e181; Fri, 10 Jul 2009 09:42:06 -0400 Received: from Sky2high@aol.com by imo-da01.mx.aol.com (mail_out_v40_r1.5.) id q.d3a.47f68297 (48576) for ; Fri, 10 Jul 2009 09:42:02 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: X-Original-Date: Fri, 10 Jul 2009 09:42:56 EDT Subject: Re: [LML] Re: Belly Landing L-360 Video X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1247233376" X-Mailer: AOL 9.1 sub 5006 X-Spam-Flag:NO X-AOL-IP: 205.188.169.199 -------------------------------1247233376 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hmmmmm......... Interesting........ Generally, the nose gear door, if constructed out of a pre-preg panel, has some thickness to it and the hinge is attached to the thin edge and thus protected a bit from gear movement. I was concerned about such a hang up when the door hinge was attached, so the SS screws used at the rear are short - just thru the nutplates and the door is set to open at a little beyond vertical. Round-head screws are used on the bail (or stop) and the axle bolt is inserted from the door side so it cannot stick out on that side even if it is a bit long. One wonders what thoughts went through the pilot's mind. Perhaps after a retract one could enter a left leading slip to force the nose gear door to open to its max and then try an extension. Perhaps slow down and try an emergency extension without the hydraulic power behind it. Perhaps try some plus G maneuvers. Perhaps extend the mains and bounce the plane a few times. Oh, this occurred in Europe - maybe the ATC service charges for multiple attempts would have cost too much........ Notice that after touchdown the plane begins to slide off to the right. Those with exhaust pipes exiting the cowling on the left will experience this tendency on a smooth gear up landing - it's just that the pipes provide less friction than glass as the slide progresses. It doesn't matter how hard the left brake is pressed - believe me, I know. However, this is a benefit if at a single runway field because the plane will be out of the way while awaiting two tow trucks to lift the fuselage so the undamaged gear can be extended. Also, remember to pick the touchdown spot so that as the plane is possibly leaving the right side of the runway it doesn't hit lights or taxiway signs as these are very expensive items. In this country, the destruction of public property may turn an FAA defined incident into an accident. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) In a message dated 7/10/2009 6:50:41 A.M. Central Daylight Time, catignano@tele2.it writes: The cause of the accident was that the owner, who I know, replaced the screws in the nose gear door with stainless screws which were longer than the ones they replaced. As a result the nose gear retracted, but would not extend. Tom McNerney ha scritto: Not to flood this place with youtube links, but this is something I think everyone should see. Check out the related videos of the plane on the ground before/after the nose gear failure. _http://www.youtube.com/watch?v=kEWWQsWThxs_ (http://www.youtube.com/watch?v=kEWWQsWThxs) Tom -- For archives and unsub _http://mail.lancaironline.net:81/lists/lml/List.html_ (http://mail.lancaironline.net:81/lists/lml/List.html) -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Looking for love this summer? Find it now on AOL Personals. (http://personals.aol.com/?ncid=emlcntuslove00000003) -------------------------------1247233376 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Hmmmmm......... Interesting........
 
Generally, the nose gear door, if constructed out of a pre-preg panel= , has some thickness to it and the hinge is attached to the thin edge and thus= protected a bit from gear movement.  I was concerned about such a han= g up when the door hinge was attached, so the SS screws used at the rear a= re short - just thru the nutplates and the door is set to open at a little be= yond vertical.  Round-head screws are used on the bail (or stop) and the= axle bolt is inserted from the door side so it cannot stick out on that side even if it is a bit long.
 
One wonders what thoughts went through the pilot's mind.  Perhap= s after a retract one could enter a left leading slip to force the nose= gear door to open to its max and then try an extension.  Perhaps slow down= and try an emergency extension without the hydraulic power behind it.  Pe= rhaps try some plus G maneuvers.  Perhaps extend the mains and bounce the= plane a few times.  Oh, this occurred in Europe - maybe the ATC service charg= es for multiple attempts would have cost too much........
 
Notice that after touchdown the plane begins to slide off to the right.  Those with exhaust pipes exiting the cowling on the left will= experience this tendency on a smooth gear up landing - it's just that the= pipes provide less friction than glass as the slide progresses.  It doesn't= matter how hard the left brake is pressed - believe me, I know.  Howe= ver, this is a benefit if at a single runway field because the plane will be ou= t of the way while awaiting two tow trucks to lift the fuselage so the undamage= d gear can be extended.  Also, remember to pick the touchdown spot so that= as the plane is possibly leaving the right side of the runway it= doesn't hit lights or taxiway signs as these are very expensive items.&nbs= p; In this country, the destruction of public property may turn an FAA defined incident into an accident.
 
Scott Krueger AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL (KARR)
 
In a message dated 7/10/2009 6:50:41 A.M. Central Daylight Time, catignano@tele2.it writes:
The cause of the accident was that the owner, who I know, replaced the screw= s in the nose gear door with stainless screws which were longer than the ones= they replaced.  As a result the nose gear retracted, but would not extend. 

Tom McNerney ha scritto: 
Not to flood this place with youtube links, but this is something I thi=
nk everyone should see.  Check out the related videos of the plane on=
 the ground before/after the nose gear failure.

http://w=
ww.youtube.com/watch?v=3DkEWWQsWThxs

Tom

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