X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 10 Oct 2009 08:12:24 -0400 Message-ID: X-Original-Return-Path: Received: from nskntmtas03p.mx.bigpond.com ([61.9.168.143] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3881505 for lml@lancaironline.net; Sat, 10 Oct 2009 06:47:37 -0400 Received-SPF: pass receiver=logan.com; client-ip=61.9.168.143; envelope-from=frederickmoreno@bigpond.com Received: from nskntotgx03p.mx.bigpond.com ([60.228.246.212]) by nskntmtas03p.mx.bigpond.com with ESMTP id <20091010104702.YGLN1310.nskntmtas03p.mx.bigpond.com@nskntotgx03p.mx.bigpond.com> for ; Sat, 10 Oct 2009 10:47:02 +0000 Received: from Razzle ([60.228.246.212]) by nskntotgx03p.mx.bigpond.com with ESMTP id <20091010104701.EKXT28036.nskntotgx03p.mx.bigpond.com@Razzle> for ; Sat, 10 Oct 2009 10:47:01 +0000 From: "Frederick Moreno" X-Original-To: "Lancair Mail" Subject: FW: [LML] Re: FAA RESCINDS INFO LETTER X-Original-Date: Sat, 10 Oct 2009 18:46:46 +0800 X-Original-Message-ID: <017a01ca4996$f8877770$e9966650$@com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_017B_01CA49DA.06AAB770" X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcpJHq33tru+Yiy6TOCSgQEwlVcXaAAd0FCQ Content-Language: en-au X-RPD-ScanID: Class unknown; VirusThreatLevel unknown, RefID str=0001.0A150204.4AD06626.0045,ss=1,fgs=0 This is a multipart message in MIME format. ------=_NextPart_000_017B_01CA49DA.06AAB770 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Bill wrote (in part) A pilot needs to be able to recognize an impending stall in any plane he is flying. I concur. However, the question becomes the MEANS by which he knows a stall is impending. One never deep stalls a swept wing airplane. Too dangerous with possible tip stall causing a roll. However, the pilot of a swept wing airplane knows of impending stall by means of a stall warning device. If you have a stall warning device that works and makes lots of noise so that it cannot be ignored, then you do not need a wing burble or control wiggle or shake to warn you. You have already been warned. One can make a strong case that you need redundant stall warning means. On a Cessna or Piper it is achieved by the stall warning horn followed by the burble you feel on the controls or in the seat of your pants. If the burble is not adequate by itself (which it may not be on a Lancair, depending on ball position and such), then you should have two layers of warning by another means. The Chelton stall warning combined with the AOA indicator meet this requirement in my opinion. But as with any high performance airplane, one must keep one eye firmly on the instruments while in the pattern, IMHO. I like having three levels of safety with my eyeball on the instruments being the first. Fred Moreno ------=_NextPart_000_017B_01CA49DA.06AAB770 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Bill = wrote (in part)

=  

A pilot needs to be able to recogni= ze an impending stall in any plane he is flying. 

 

=  

I co=
ncur.  
 
However, the qu=
estion becomes the MEANS by which he knows a stall is impending.  One =
never deep stalls a  swept wing  airplane.  Too dangerous wi=
th possible tip stall causing a roll.  However, the pilot of a swept w=
ing airplane knows of impending stall by means of a stall warning device.&n=
bsp; If you have a stall warning device that works and makes lots of noise =
so that it cannot be ignored, then you do not need a wing burble or control=
 wiggle or shake to warn you.  You have already been warned. 
 
On=
e can make a strong case that you need redundant stall warning means. =
 On a  Cessna or Piper it is achieved by the stall warning horn follow=
ed by the burble you feel on the controls or in the seat of your pants.&nbs=
p; If the burble is not adequate by itself (which it may not be on a Lancai=
r,  depending on ball position and such), then you should have two lay=
ers of  warning by another means.  The  Chelton stall warnin=
g combined with the AOA indicator meet this requirement in my opinion. =
; 
 
Bu=
t as with any high performance airplane, one must keep one eye firmly on th=
e instruments while in the pattern, IMHO.  I like having three levels =
of safety with my eyeball on the instruments being the first. 
 
Fr=
ed Moreno
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