X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 31 Oct 2013 07:59:41 -0400 Message-ID: X-Original-Return-Path: Received: from mail-qa0-f41.google.com ([209.85.216.41] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6570699 for lml@lancaironline.net; Wed, 30 Oct 2013 16:55:30 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.41; envelope-from=legacyl2k@gmail.com Received: by mail-qa0-f41.google.com with SMTP id f11so4025237qae.7 for ; Wed, 30 Oct 2013 13:54:55 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.224.163.140 with SMTP id a12mr453407qay.59.1383166495438; Wed, 30 Oct 2013 13:54:55 -0700 (PDT) Received: by 10.96.45.233 with HTTP; Wed, 30 Oct 2013 13:54:55 -0700 (PDT) In-Reply-To: References: X-Original-Date: Wed, 30 Oct 2013 13:54:55 -0700 X-Original-Message-ID: Subject: Re: [LML] engine shut down due to uncoordinated flight From: Mike Larkin X-Original-To: Lancair Mailing List Content-Type: multipart/alternative; boundary=089e0158af4ea03ceb04e9fb8ba6 --089e0158af4ea03ceb04e9fb8ba6 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Ralf, Well lets see...... The ball moves left, so the fuel will move_______________ (left or right). Fill in the blank... BTW Cessna's do the same thing...... Many airplanes will bite hard if you let the ball go out-of-trim, especially when slow.... Flying in trim is important..... Way more important then the next approach plate.... Mike Larkin On Wed, Oct 30, 2013 at 7:45 AM, wrote: > Dear subscribers,**** > > ** ** > > I noticed a phenomena on my 4P that I thought might be worth sharing to > see if it is unique or may be others experienced something similar:**** > > ** ** > > When my ball is significantly out of center over a longer period of time > (>30 sec), my fuel selector is on left, and I have less than 15 gals in m= y > left tank my engine will quit due to fuel starvation. **** > > ** ** > > It happens mainly when I am practicing approaches: on the missed go > around, when I am busy applying power, getting gears and flaps up, > selecting my next way point in the GPS, changing my approach plates=85 if= I > am on the left tank with low fuel and I forget to retrim the rudder for t= he > changed power setting my engine will shut down due to fuel starvation. My > fuel indicator will then show zero for the left tank. Switching the tanks > and applying high boost brings it back to life within seconds. After 30 > seconds or so I can see the original amount of fuel again in the left tan= k. > It is not a big deal anymore because I know how to fix it but it certainl= y > caught my full attention the first time.**** > > ** ** > > In climb with full fuel I can also notice that I am loosing fuel out of > the left vent on the wing tip if I don=92t keep my ball in the middle.***= * > > ** ** > > In straight and level flight I can run this tank dry with the exact amoun= t > of unusable fuel to which I calibrated my fuel indicator on the ground.**= * > * > > ** ** > > The only explanation that I have for this phenomena is that this > uncoordinated flight situation must create some kind of vacuum on my wing > tip around the vent port that sucks the fuel out towards the wing tip awa= y > from the fuselage. I have the regular wing tips and not the winglets.**** > > ** ** > > Any input or advice is appreciated.**** > > ** ** > > Ralf**** > > ** ** > --=20 Mike Larkin LarkinAviationConsulting LegacyL2K@gmail.com 602-770-6054 --089e0158af4ea03ceb04e9fb8ba6 Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable

Ralf,

Well lets see......=A0 The ba= ll moves left, so the fuel will move_______________ (left or right).=A0 Fil= l in the blank...=A0 BTW Cessna's do the same thing......=A0 Many airpl= anes will bite hard if you let the ball go out-of-trim, especially when slo= w....=A0 Flying in trim is important.....=A0 Way more important then the ne= xt approach plate....

Mike Larkin

On Wed, Oct 30, 2013 at 7:45 AM, <<= a href=3D"mailto:bronnenmeier@grobsystems.com" target=3D"_blank">bronnenmei= er@grobsystems.com> wrote:

Dear subscribers,
=A0
I noticed a phenomena on my 4P = that I thought might be worth sharing to see if it is unique or may be othe= rs experienced something similar:
<= u>=A0

When my ball is significantly out of center over a l= onger period of time (>30 sec), my fuel selector is on left, and I have = less than 15 gals in my left tank my engine will quit due to fuel starvatio= n.

=A0
It happe= ns mainly when I am practicing approaches: on the missed go around, when I = am busy applying power, getting gears and flaps up, selecting my next way p= oint in the GPS, changing my approach plates=85 if I am on the left tank wi= th low fuel and I forget to retrim the rudder for the changed power setting= my engine will shut down due to fuel starvation. My fuel indicator will th= en show zero for the left tank. Switching the tanks and applying high boost= brings it back to life within seconds. After 30 seconds or so I can see th= e original amount of fuel again in the left tank. It is not a big deal anym= ore because I know how to fix it but it certainly caught my full attention = the first time.

=A0
In climb= with full fuel I can also notice that I am loosing fuel out of the left ve= nt on the wing tip if I don=92t keep my ball in the middle.
=A0
In straight and level flight I = can run this tank dry with the exact amount of unusable fuel to which I cal= ibrated my fuel indicator on the ground.
=A0
The only explanation that I hav= e for this phenomena is that this uncoordinated flight situation must creat= e some kind of vacuum on my wing tip around the vent port that sucks the fu= el out towards the wing tip away from the fuselage. I have the regular wing= tips and not the winglets.

=A0
Any inpu= t or advice is appreciated.
= =A0
Ralf

=A0

=

--
Mike Larkin
LarkinAviationConsulting
LegacyL2K@gmail.com
602-770-6054

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