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hurd(at)gvtc.com
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 Posted: Mon May 04, 2009 1:28 pm Post subject: RV6A Strange Odor |
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Hope somebody can help out here... Last two flights in 6A(500hr TT, hangared, south Texas) have noticed stong odor right at liftoff. Something between dead rat and burned pizza. Definitely organic, not wiring, rubber or oil. It comes and goes during flight, maybe a little stronger at zero G. Fades at touchdown, completely gone by shutdown. No other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil filler door. Detailed engine inspection revealed no bird nests, dirt-dauber dormitories or other usual suspects. No wires or hoses anywhere near hot parts. Nothing in cabin heat or fresh air scat tubing. Next to check: tail cone and wheel pants.
Would sure like to hear from anyone who has solved a similar problem. And yes, the pilot's diet and bathing habits have been ruled out
[quote][b]
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA
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| Posted: Mon May 04, 2009 1:41 pm Post subject: RV6A Strange Odor |
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At 02:24 PM 5/4/2009 Monday, you wrote:
| Quote: | Hope somebody can help out here... Last two flights in 6A(500hr TT, hangared, south Texas) have noticed stong odor right at liftoff. Something between dead rat and burned pizza. Definitely organic, not wiring, rubber or oil. It comes and goes during flight, maybe a little stronger at zero G. Fades at touchdown, completely gone by shutdown. No other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil filler door. Detailed engine inspection revealed no bird nests, dirt-dauber dormitories or other usual suspects. No wires or hoses anywhere near hot parts. Nothing in cabin heat or fresh air scat tubing. Next to check: tail cone and wheel pants.
Would sure like to hear from anyone who has solved a similar problem. And yes, the pilot's diet and bathing habits have been ruled out
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Burnt toast? Sure you're not having a stroke...
Matt
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Matt Dralle
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chaskuss(at)yahoo.com
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| Posted: Mon May 04, 2009 2:25 pm Post subject: RV6A Strange Odor |
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You might want to shine a flashlight up your exhaust stacks. You might have a crematorium going on in one of them.  Stick a coat hanger up to verify that there are no obstructions.
Charlie Kuss
--- On Mon, 5/4/09, Jim Hurd <hurd(at)gvtc.com> wrote:
| Quote: | From: Jim Hurd <hurd(at)gvtc.com>
Subject: RV6A Strange Odor
To: rv-list(at)matronics.com
Date: Monday, May 4, 2009, 5:24 PM
Hope somebody can help out here... Last two flights in
6A(500hr TT, hangared, south Texas) have noticed stong odor
right at liftoff. Something between dead rat and burned
pizza. Definitely organic, not wiring, rubber or oil. It
comes and goes during flight, maybe a little stronger at
zero G. Fades at touchdown, completely gone by shutdown. No
other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil
filler door. Detailed engine inspection revealed no bird
nests, dirt-dauber dormitories or other usual suspects. No
wires or hoses anywhere near hot parts. Nothing in cabin
heat or fresh air scat tubing. Next to check: tail cone and
wheel pants.
Would sure like to hear from anyone who has solved a
similar problem. And yes, the pilot's diet and bathing
habits have been ruled out
|
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John.Morrissey(at)csiro.a
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| Posted: Mon May 04, 2009 2:40 pm Post subject: RV6A Strange Odor |
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Have a look in your wheel pants
From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Jim Hurd
Sent: Tuesday, 5 May 2009 7:24 AM
To: rv-list(at)matronics.com
Subject: RV6A Strange Odor
Hope somebody can help out here... Last two flights in 6A(500hr TT, hangared, south Texas) have noticed stong odor right at liftoff. Something between dead rat and burned pizza. Definitely organic, not wiring, rubber or oil. It comes and goes during flight, maybe a little stronger at zero G. Fades at touchdown, completely gone by shutdown. No other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil filler door. Detailed engine inspection revealed no bird nests, dirt-dauber dormitories or other usual suspects. No wires or hoses anywhere near hot parts. Nothing in cabin heat or fresh air scat tubing. Next to check: tail cone and wheel pants.
Would sure like to hear from anyone who has solved a similar problem. And yes, the pilot's diet and bathing habits have been ruled out
[quote]
//www.matronics.com/Navigator?RV-List
ics.com
.matronics.com/contribution
[b]
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ronlee(at)pcisys.net
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kearney
Joined: 20 Sep 2008
Posts: 563
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| Posted: Mon May 04, 2009 6:49 pm Post subject: RV6A Strange Odor |
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Matt
A few years ago I found hazelnut shells on the floor of my Piper Cherokee. I
never could figure out where they came from. Fast forward a year or two and
I found that *something* made a nest in the insulation behind the panel. I
only found it when I replaced the stock 1966 Piper insulation with something
newer.
Bottom line is to check carefully behind the panel. I had been on my back
under the panel(as was my avionics shop) several times and had never seen
the nest.
Cheers
Les
--
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lm4(at)juno.com
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| Posted: Tue May 05, 2009 6:38 am Post subject: RV6A Strange Odor |
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Jim,
I know of a guy that let his plane sit thru the winter in Rochester N.Y. and then in the spring took the plane for a spin. Shortly into the flight he smelled something burning. He brought the plane back and on inspection he found that Chipmunks had hidden their nuts in the heater shroud at the muffler. HTH
Larry
On Mon, 4 May 2009 16:24:21 -0500 "Jim Hurd" <hurd(at)gvtc.com (hurd(at)gvtc.com)> writes:
| Quote: | Hope somebody can help out here... Last two flights in 6A(500hr TT, hangared, south Texas) have noticed stong odor right at liftoff. Something between dead rat and burned pizza. Definitely organic, not wiring, rubber or oil. It comes and goes during flight, maybe a little stronger at zero G. Fades at touchdown, completely gone by shutdown. No other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil filler door. Detailed engine inspection revealed no bird nests, dirt-dauber dormitories or other usual suspects. No wires or hoses anywhere near hot parts. Nothing in cabin heat or fresh air scat tubing. Next to check: tail cone and wheel pants.
Would sure like to hear from anyone who has solved a similar problem. And yes, the pilot's diet and bathing habits have been ruled out
|
____________________________________________________________
[url=_blank]Click to learn about options trading and get the latest information.[/url]
[quote][b]
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Tailgummer(at)aol.com
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| Posted: Tue May 05, 2009 7:12 am Post subject: RV6A Strange Odor |
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Ouch!
In a message dated 5/5/2009 7:41:03 A.M. Pacific Daylight Time, lm4(at)juno.com writes:
| Quote: | Jim,
I know of a guy that let his plane sit thru the winter in Rochester N.Y. and then in the spring took the plane for a spin. Shortly into the flight he smelled something burning. He brought the plane back and on inspection he found that Chipmunks had hidden their nuts in the heater shroud at the muffler. HTH
Larry
On Mon, 4 May 2009 16:24:21 -0500 "Jim Hurd" <hurd(at)gvtc.com (hurd(at)gvtc.com)> writes:
| Quote: | Hope somebody can help out here... Last two flights in 6A(500hr TT, hangared, south Texas) have noticed stong odor right at liftoff. Something between dead rat and burned pizza. Definitely organic, not wiring, rubber or oil. It comes and goes during flight, maybe a little stronger at zero G. Fades at touchdown, completely gone by shutdown. No other aircraft anomalies observed.
There is a faint odor similar to burnt toast at the oil filler door. Detailed engine inspection revealed no bird nests, dirt-dauber dormitories or other usual suspects. No wires or hoses anywhere near hot parts. Nothing in cabin heat or fresh air scat tubing. Next to check: tail cone and wheel pants.
Would sure like to hear from anyone who has solved a similar problem. And yes, the pilot's diet and bathing habits have been ruled out
|
____________________________________________________________
Click to learn about options trading and get the latest information.
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[quote][b]
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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hurd(at)gvtc.com
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| Posted: Wed May 06, 2009 1:29 pm Post subject: RV6A Strange Odor |
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Larry MacDonald is the default winner of the "Strange Odor Contest." Larry's guess was chipmunk MRE's in the heater shroud. In fact, the odor was emanating from the carcass of a very large moth which had crawled several feet down 1" scat tubing to the very bottom of the cabin heat shroud around the exhaust.
I found the well-done moth after a complete disassembly of the muff. Thanks to all for suggestions. Jim
[quote] ---
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