Return-Path: Received: from [24.25.9.102] (HELO ms-smtp-03-eri0.southeast.rr.com) by logan.com (CommuniGate Pro SMTP 4.1.6) with ESMTP id 2715505 for flyrotary@lancaironline.net; Sat, 08 Nov 2003 20:10:35 -0500 Received: from o7y6b5 (clt78-020.carolina.rr.com [24.93.78.20]) by ms-smtp-03-eri0.southeast.rr.com (8.12.10/8.12.7) with SMTP id hA91AXOj011614 for ; Sat, 8 Nov 2003 20:10:34 -0500 (EST) Message-ID: <001301c3a65d$c71c5d00$1702a8c0@WorkGroup> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Murphy's law of precautionary landings Date: Sat, 8 Nov 2003 20:06:59 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0010_01C3A633.DE0AD2A0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0010_01C3A633.DE0AD2A0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message=20 ----- Original Message -----=20 From: Russell Duffy=20 To: Rotary motors in aircraft=20 Sent: Saturday, November 08, 2003 7:53 PM Subject: [FlyRotary] Murphy's law of precautionary landings Greetings, Filled up with gas, and took off to buzz the beach. At this point, I = decided that the engine was trustworthy enough to venture out, even if = it meant flying over the bay at 1400 ft. After blowing past a Cherokee = that departed ahead of me, I got to about the middle of the bay, about = 10 miles away, and noticed that my volt meter was reading 11.5V. Hmmm, = that should be 14.5V. I wonder how long the alternator has been out? = Immediate 180 turn, 60 degree bank, and back to the airport, passing the = Cherokee going the opposite direction this time. I turned off all the = non-essential stuff, and called a straight-in precautionary landing to = 36. The voltage never went any lower, and everything kept running just = fine as I taxied back to the hanger. =20 =20 Upon inspection, I found the 100A fuse to the alternator blown. This = doesn't exactly give me a warm fuzzy feeling, especially since I can't = see anything wrong except for the blown fuse. Replaced the fuse, but = didn't have a chance to test it since it was getting dark. I'll be = really surprised if the alternator itself is bad, but I'll find out when = I run it again. Fortunately, I already have the rev-2, smaller = alternator that can be mounted now if necessary. =20 As a side note, the engine didn't run all that well in descent, so I = may have done more harm than good with my prop-off dual map calibration = attempt. FWIW, Tracy said I could scratch out that paragraph in the = instructions about calibrating this with the prop off :-) =20 On another note, Tracy also said that he's hoping to ship the first = EM-2's around the end of Nov! The year was not specified though :-) Rusty (I need a new job- Hello GE Medical...) Good Catch, Rusty! Not a good place to practice your engine out procedures - at 1400 = MSL over the gulf {:>) One good thing, you can get further on a dying = battery in a fast airplane than you could with a slow one. I have a big indicator light right in front of me on my instrument = panel that comes on when abnormal voltage conditions exists (Low or = High). I presume that Tracy's EM2 has some sort of announciation alarm = for such things. Now, that I only have one battery rather than two, I = find myself monitoring my voltage a bit more often=20 Keeping alert for abnormal operations is what its about - ask me. Ed Anderson =20 ------=_NextPart_000_0010_01C3A633.DE0AD2A0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Message=
 
----- Original Message -----
From:=20 Russell=20 Duffy
Sent: Saturday, November 08, = 2003 7:53=20 PM
Subject: [FlyRotary] Murphy's = law of=20 precautionary landings

Greetings,

 

Filled up with=20 gas, and took off to buzz the beach. =20 At this point, I decided that the engine was trustworthy enough = to=20 venture out, even if it meant flying over the bay at 1400 ft.  After blowing past a = Cherokee=20 that departed ahead of me, I got to about the middle of the bay, about = 10=20 miles away, and noticed that my volt meter was reading 11.5V.  Hmmm, that should be = 14.5V.  I wonder how long the = alternator has=20 been out?  Immediate 180 = turn, 60=20 degree bank, and back to the airport, = passing=20 the Cherokee going the opposite direction this time.  I turned off all the = non-essential=20 stuff, and called a straight-in precautionary landing to 36.  The voltage never went any = lower, and=20 everything kept running just fine as I taxied back to the hanger. 

 

Upon=20 inspection, I found the 100A fuse to the alternator blown.  This doesn=92t exactly give = me a warm=20 fuzzy feeling, especially since I can=92t see anything wrong except = for the=20 blown fuse.  Replaced = the fuse,=20 but didn=92t have a chance to test it since it was getting dark.  I=92ll be really surprised = if the=20 alternator itself is bad, but I=92ll find out when I run it = again.  Fortunately, I already have = the rev-2,=20 smaller alternator that can be mounted now if necessary.

 

As a side=20 note, the engine didn=92t run all that well in descent, so I may have = done more=20 harm than good with my prop-off dual map calibration attempt.  FWIW,=20 Tracy said I could scratch = out=20 that paragraph in the instructions about calibrating this with the = prop off=20 :-) 

 

On another note, Tracy also said that he's = hoping to=20 ship the first EM-2's around the end of Nov!  The year was not = specified=20 though :-)

 

Rusty (I need a new job- Hello GE=20 Medical...)

 

 

Good Catch, Rusty!

 

    Not a good place to = practice=20 your engine out procedures - at 1400 MSL over the gulf {:>) =   One=20 good thing, you can get further on a dying battery in a fast airplane = than you=20 could with a slow one.

 

    I have a big indicator = light right=20 in front of me on my instrument panel that comes on when abnormal = voltage=20 conditions exists (Low or High).   I presume that Tracy's = EM2 has=20 some sort of announciation alarm for such things.  Now, that I = only have=20 one battery rather than two, I find myself monitoring my voltage a bit = more=20 often

 

   Keeping alert for abnormal = operations is=20 what its about - ask me.

 

Ed Anderson

 

  =20

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