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View Poll Results: You find a puddle of oil 3" X 5" under your aircraft after you land. What do you do?
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Get back in the aircraft and fly 17.5 NM home?
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8 |
4.30% |
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Make a post to VAF asking what to do?
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3 |
1.61% |
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Phone your A&P Mechanic?
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0 |
0% |
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Pull cowl and investigate?
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170 |
91.40% |
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Find an A&P to investigate?
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1 |
0.54% |
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Other?
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4 |
2.15% |

09-02-2015, 09:20 PM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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Oil on ground under your aircraft
You’re out flying meeting your buddies for lunch. After lunch on your way home, there is a rainstorm at your home airport. You divert to a nearby airport to visit friends so that there is time for the storm to pass. When you get out of your aircraft, you find a puddle about 3” X 5” of oil under the airplane and it is coming from cowl exit. Oil is noticed by the air inlet in front of the #2 cylinder. Pulling the dipstick, the oil is down ¾ of a quart from what it was when you took off 1.1 hours earlier. What do you do?
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
Last edited by RV6_flyer : 09-02-2015 at 09:25 PM.
Reason: Edit text for poll.
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09-02-2015, 09:32 PM
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Join Date: Oct 2014
Location: Colorado
Posts: 243
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maybe need to clarify a bit.
Are you saying from the time you landed ,parked and got out (what 5 minutes max?) you have a 3X5 puddle under the airplane in that amount of time?
Or was there considerable amount of time the airplane was sitting?
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09-02-2015, 09:56 PM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,219
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Quote:
Originally Posted by RV6_flyer
You?re out flying meeting your buddies for lunch. After lunch on your way home, there is a rainstorm at your home airport. You divert to a nearby airport to visit friends so that there is time for the storm to pass. When you get out of your aircraft, you find a puddle about 3? X 5? of oil under the airplane and it is coming from cowl exit. Oil is noticed by the air inlet in front of the #2 cylinder. Pulling the dipstick, the oil is down ? of a quart from what it was when you took off 1.1 hours earlier. What do you do?
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Pull the cowl, look for the leak. Depending on the source, repair the leak on the spot, add oil fly home and make repairs, or ground the aircraft if the repair isn't fixable or the problem isn't flyable.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
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09-02-2015, 09:56 PM
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Join Date: Nov 2010
Location: ____
Posts: 829
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Lift the top cowl and have a look to see where it's coming from. And the bottom if needed. If your at a friends, he has a hangar right? Could be just a rocker cover gasket or return line hose and a 5 minute fix if you are lucky. A nose seal or governor gasket if you are not as lucky. You are lucky to find it on the ground in any case.
So what did you do and where is your leak?
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09-02-2015, 10:16 PM
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Join Date: Jan 2005
Location: NC25
Posts: 3,507
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Quote:
Originally Posted by ijustwannafly
maybe need to clarify a bit.
Are you saying from the time you landed ,parked and got out (what 5 minutes max?) you have a 3X5 puddle under the airplane in that amount of time?
Or was there considerable amount of time the airplane was sitting?
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Puddle was under the airplane when you got out. After engine shutdown, you wrote down hobbs and tach time and got out to find the puddle.
__________________
Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours
Where is N157GS
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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09-02-2015, 10:50 PM
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Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,932
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Oil is the engine's blood. That much coming out in that short a time? Definitely warrants investigation.
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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09-03-2015, 12:25 AM
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Join Date: Jan 2008
Location: Ashland, OR
Posts: 2,574
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been there, done that
Once preflighting my Citabria, I noticed a puddle of oil and it was dripping from the cowl exit. Airplane had been parked for a week, but still, not normal.
Looking inside the dipstick access door, I could see a trail of oil running down the side of the case, coming from the pipe fitting where the mechanical oil pressure gauge line connected. I pulled the top cowl, grabbed that fitting and it broke off in my hand. That fitting had a pin-hole orifice so that oil would not be lost fast if the gauge line broke. But that was no help in this case, the fitting was broken at the base of the threads. Would have pumped oil out fast.
You don't know how bad it is until you find it and look at it. Gotta pull the cowl and have a look-see.
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!! 
VAF donation Jan 2020
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09-03-2015, 05:25 AM
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Join Date: Sep 2011
Location: Tampa FL
Posts: 43
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Probably your crankshaft seal leaking but need to pull the cowl and make sure. Best to fix your problem on the ground where you are then to press on with hopes of making it home .
Cheers
Pete
RV6A
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09-03-2015, 10:53 AM
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Join Date: Sep 2010
Location: Redlands, Ca.
Posts: 1,458
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... Call Anti-Splat-Aero of course!!!!!
__________________
Allan Nimmo
AntiSplatAero.com
Innovative Aircraft Safety
Products, Tools & ServicesInfo@AntiSplatAero.com Southern California (KREI)
RV-9A / Edge-540 
(909) 824-1020
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09-03-2015, 11:10 AM
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Join Date: Feb 2006
Location: Baltimore, MD
Posts: 1,039
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