X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 16 Nov 2013 18:29:13 -0500 Message-ID: X-Original-Return-Path: Received: from mail-oa0-f43.google.com ([209.85.219.43] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTPS id 6602259 for lml@lancaironline.net; Sat, 16 Nov 2013 12:44:26 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.219.43; envelope-from=pjdmiller@gmail.com Received: by mail-oa0-f43.google.com with SMTP id g12so5376410oah.2 for ; Sat, 16 Nov 2013 09:43:51 -0800 (PST) X-Received: by 10.60.51.7 with SMTP id g7mr12801441oeo.6.1384623831710; Sat, 16 Nov 2013 09:43:51 -0800 (PST) X-Original-Return-Path: Received: from [192.168.1.144] ([68.202.59.203]) by mx.google.com with ESMTPSA id z5sm11357479obg.13.2013.11.16.09.43.49 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 16 Nov 2013 09:43:50 -0800 (PST) Subject: Re: [LML] Re: Egads... References: From: Paul Miller Content-Type: multipart/alternative; boundary=Apple-Mail-618F1322-B47C-48AC-BB85-2739BCD4CACD X-Mailer: iPad Mail (10B146) In-Reply-To: X-Original-Message-Id: <245B36C5-BEC0-44BF-B6B0-DF8C38E43CD0@gmail.com> X-Original-Date: Sat, 16 Nov 2013 12:43:48 -0500 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-618F1322-B47C-48AC-BB85-2739BCD4CACD Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Using a reference like the POH or even the engine operating manual to determ= ine basic operating procedures is another way to go. Here's what tcm says f= or the io550: 4-3.11. Engine Shutdown Supplement the AFM/POH engine shutdown procedures with the following: Boost Pump......................................................OFF (accordi= ng to AFM/POH) Throttle............................................................. 1700 R= PM WARNING Absence of RPM drop during the magneto check may be an indication of a fault= y ignition circuit resulting in a condition known as =E2=80=9CHot Magneto.=E2= =80=9D Should the propeller be turned by hand, the engine may inadvertently s= tart and cause personal injury or death. This condition must be corrected pr= ior to continued aircraft operation. CAUTION: When operating on single ignition, some RPM drop should be noted. N= ormal indications are up to 150 RPM drop and slight engine roughness as each= magneto is switched off. RPM drop in excess of 150 RPM may indicate a fault= y magneto or fouled spark plugs. Avoid prolonged single magneto operation to= preclude spark plug fouling. NOTE: If the engine runs roughly after single magneto operation, increase en= gine speed to 2200 RPM in the BOTH position and lean the mixture control unt= il the RPM peaks for ten seconds before returning to the full rich position t= o clear the spark plugs and restore smooth operation before returning to sin= gle magneto operation. Ignition Switch.................................................R=EF=80=A0 RESULT: RPM drops 150 RPM or less; record Left Magneto RPM drop results. Max= imum allowable RPM drop spread between magnetos is 75 RPM. Ignition Switch.................................................BOTH=EF=80=A0= RESULT: Engine RPM returns to approximately 1700 RPM. Ignition Switch.................................................L=EF=80=A0 RESULT: RPM drops 150 RPM or less; record Right Magneto RPM drop results. Ma= ximum allowable RPM drop spread between magnetos is 75 RPM. Throttle ............................................................. IDLE MixtureControl...............................................IDLECUTOFF Ignition Switch.................................................OFF=20 On 2013-11-16, at 12:27, "Greenbacks, UnLtd." wrote: > Yup! I thought a good reason would bubble to the surface here on LML. >=20 >=20 >=20 > -- > For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.htm= l --Apple-Mail-618F1322-B47C-48AC-BB85-2739BCD4CACD Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Using a reference like the POH or even= the engine operating manual to determine basic operating procedures is anot= her way to go.  Here's what tcm says for the io550:

=09 =09 =09

4-3.11. Engine Shutdown

Supplement the AFM/POH engine shutd= own procedures with the following:

  1. Boost Pump................................................= ......OFF (according to AFM/POH)

  2. Throttle..................................................= ........... 1700 RPM

    WAR= NING

    Abs= ence of RPM drop during the magneto check may be an indication of a faulty ignition circuit resulting in a condition known as =E2=80=9CHot Magneto.=E2=80=9D Should the propeller be turned by hand, the engine may inadvertently start and cause personal injury or death. This condition must be corrected prior to continued aircraft operation.

    C= AUTION: When operating on single ignition, some RPM drop should be noted. Normal indications are up to 150 RPM drop and slight engine roughness as each magneto is switched off. RPM drop in excess of 150 RPM may indicate a faulty magneto or fouled spark plugs. Avoid prolonged single magneto operation to preclude spark plug fouling.

    NOTE: If the engine runs roughly after single magneto oper= ation, increase engine speed to 2200 RPM in the BOTH position and lean the mixture control until the RPM peaks for ten seconds before returning to the full rich position to clear the spark plugs and restore smooth operation= before returning to single magneto operation.

  3. Ignition Switch...........................................= ......RRESULT: RPM drops 150 RPM or less; r= ecord Left Magneto RPM drop results. Maximum allowable RPM drop spread between magnetos is 75 RPM.

  4. Ignition Switch...........................................= ......BOTH=EF=80=A0 RESULT: Engine RPM returns to appro= ximately 1700 RPM.

  5. Ignition Switch...........................................= ......LRESULT: RPM drops 150 RPM or less; r= ecord Right Magneto RPM drop results. Maximum allowable RPM drop spread between magnetos is 75 RPM.

  6. Throttle .................................................= ............ IDLE

  7. MixtureControl............................................= ...IDLECUTOFF

  8. Ignition Switch...........................................= ......OFF 



On 2013-11-16, at 12:27, "Greenbac= ks, UnLtd." <N4ZQ@VERIZON.NET>= wrote:

Yup! I thought a g= ood reason would bubble to the surface here on LML.
<= br>

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For archives a= nd unsub ht= tp://mail.lancaironline.net:81/lists/lml/List.html
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