| Actual fuel quantity [message #11631] |
Mon, 28 July 2014 17:05  |
TjYak50
Messages: 280
Registered: April 2011
Location: Phoenix, AZ (KDVT)
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Senior Member |
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What is everyones actual past experience with the following?
* 15G Outer Tanks... I only ever seem to get 12 or 13 in them.
* Main tank capacity... By reference to cockpit gauge I get a little more than 154
* Foxboro accuracy? And is there an adjustment tweak for it?
Tj
Tom Johnson
Aviation Insurance Broker / Mu2 Owner-was
Assured Partners Aerospace (Phoenix)
Tj@airpowerinsurance.com
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| Re: Actual fuel quantity [message #11633] |
Mon, 28 July 2014 17:17  |
TjYak50
Messages: 280
Registered: April 2011
Location: Phoenix, AZ (KDVT)
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Senior Member |
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Anacondads--- via Mu2listHi .
I am with the understanding that the Foxboro is very accurate with only a small error margin in your favor
That matches with what I've seen so far.
Tom Johnson
Aviation Insurance Broker / Mu2 Owner-was
Assured Partners Aerospace (Phoenix)
Tj@airpowerinsurance.com
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| Actual fuel quantity [message #11634] |
Mon, 28 July 2014 17:17 |
Anthony Wolf
Messages: 90
Registered: July 2013
Location: Durango, CO
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I have recently noted that more fuel can be gotten into the mains after the tips and outers are full - perhaps an even keel kind of issue. I also usually have the line fueler double check all main and outer levels. Usually get another 5-10 gallons in.
Have found Foxboro totalizer +-2 gallons with fuel truck. When variance is greater (Fox > truck) I suggest that all inner and main tank levels be rechecked.
Anthony F. "Tony" Wolf, CTP
Managing Director
Safe Harbor Associates
817-821-7335
anthonyfwolf@me.com (anthonyfwolf@me.com)
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| Actual fuel quantity [message #11638] |
Mon, 28 July 2014 18:16 |
Scott Dann
Messages: 329
Registered: April 2011
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Senior Member |
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Tom and others,
My experience is identical: 12-13 out of outers, 155 or a bit more out of mains and my Foxboro is scarey accurate.
Scott Dann
From: "Johnson, Tom" <tomjohnson@cox.net>
To: mu2list@mailman.mu-2aopa.com
Sent: Monday, July 28, 2014 4:05:49 PM
Subject: [MU-2 list] Actual fuel quantity
What is everyones actual past experience with the following?
* 15G Outer Tanks... I only ever seem to get 12 or 13 in them.
* Main tank capacity... By reference to cockpit gauge I get a little more than 154
* Foxboro accuracy? And is there an adjustment tweak for it?
Tj
Tom Johnson
Aviation Insurance Broker / Mu2 Owner (349SA)
Airpower Insurance, LLC
www.airpowerinsurance.com
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| Actual fuel quantity [message #11643] |
Tue, 29 July 2014 12:52 |
TjYak50
Messages: 280
Registered: April 2011
Location: Phoenix, AZ (KDVT)
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Senior Member |
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Thanks for all the good replies.
We have new fuel reconciliation scheme so all 3 operators can fairly account for fuel used which is surprisingly complex.
My gut tells me the Main can hold a little more than advertised, the Outers a little less and the tips about spot-on.
Tj
Tom Johnson
Aviation Insurance Broker / Mu2 Owner-was
Assured Partners Aerospace (Phoenix)
Tj@airpowerinsurance.com
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| Actual fuel quantity [message #11645] |
Tue, 29 July 2014 13:05 |
TjYak50
Messages: 280
Registered: April 2011
Location: Phoenix, AZ (KDVT)
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Senior Member |
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Well... math is an issue sometimes. One error gets compounded and it alwasy seems to be in the wrong direction. We have been datalogging fuel for the last month in multiple ways to see what is most accurate. By math, totalizer, and gauge observation.
We have 3 operators and one fuel farm account. Effectively we consider the fuel in the tanks = fuel in the ground. Its all just inventory. An operator could return the plane with more or less than he left and his individual fuel allocation could go down or up based on this. We don't refuel after every flight just so the next operator has a chance to choose his own fuel load.
After a few more flights we will have a good read on the respective accuracy for our accounting and I will report back.
TJ
Tom Johnson
Aviation Insurance Broker / Mu2 Owner-was
Assured Partners Aerospace (Phoenix)
Tj@airpowerinsurance.com
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| Actual fuel quantity [message #11646] |
Tue, 29 July 2014 13:11 |
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Dave Klain
Messages: 1162
Registered: April 2011
Location: Fairfax, VA
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Senior Member
Administrator |
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Sounds like fun...Glad I don't have to deal with it.
MU-2 AOPA administrator
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