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11-26-2016, 05:30 AM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 885
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An A&P/AI question: which logbook?
Is there a rule or rule of thumb that defines what goes into an engine vs an airframe logbook? Some things seem like they could go in either, like fuel lines from the collator to the fuel pump; its bolted to the engine, but part of the fuel system arguably. Likewise EGTs sensors, bolted but the engine could care less. One step further, even the alternator is in the grey zone. Any thoughts on the grey zone would help. Thanks.
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Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2020 VAF contributor
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11-26-2016, 06:04 AM
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Join Date: Dec 2005
Posts: 917
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More qualified answers will follow, but my guy says his rule of thumb is if the engine requires the item to run, you put it in the engine book.
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Mike C.
Sierra Nevada
RV-6A bought flying
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11-26-2016, 06:20 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,762
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Basic rule of thumb......
If it would go with the engine, if sold separately, it should go in the engine logs.
Nothing says it can't go in both logbooks.
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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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11-26-2016, 07:33 AM
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Join Date: Jun 2007
Location: new iberia la
Posts: 765
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Which log
If you take your engine off and send it out for overhaul everything left behind is technically airframe parts. This includes starter, alternator, exhaust, baffles, cowl & spinner, lord mounts ect. I agree if it's a close call it should go in both books.
Don Broussard A&P, IA, ATP
RV-9 Rebuild in Progress
57 Piper Pacer
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11-26-2016, 08:26 AM
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Join Date: Nov 2008
Location: Shreveport, LA
Posts: 1,002
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Thanks Don. For some reason, when you said it in those words, its easy to make a logbook distinction.
Quote:
Originally Posted by cajunwings
If you take your engine off and send it out for overhaul everything left behind is technically airframe parts. This includes starter, alternator, exhaust, baffles, cowl & spinner, lord mounts ect. I agree if it's a close call it should go in both books.
Don Broussard A&P, IA, ATP
RV-9 Rebuild in Progress
57 Piper Pacer
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11-26-2016, 09:05 AM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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There certainly is a gray zone. Alternator, I would out in the engine logbook. Egt sensors I would out in the airframe logbook because the instrument is I side. Baffles I would out in the engine logbook. Fuel system I would out in the airframe logbook if it is firewall aft. Firewall to engine I may put in both, but certainly in the engine logbook.
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Jesse Saint
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11-26-2016, 09:51 AM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,027
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Quote:
Originally Posted by cajunwings
If you take your engine off and send it out for overhaul everything left behind is technically airframe parts. This includes starter, alternator, exhaust, baffles, cowl & spinner, lord mounts ect. I agree if it's a close call it should go in both books.
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This is the standard that most professional mechanics and shops use.
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Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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11-26-2016, 02:37 PM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,092
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Oil changes?
How about oil/filter changes?
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(2020 dues paid)
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11-26-2016, 03:28 PM
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Join Date: Jun 2007
Location: new iberia la
Posts: 765
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Logbooks
Oil & filter changes, spark plug cleaning, gapping or replacement, mag work or timing adjustment, carb or fuel injector inlet screens and engine gasket replacement are examples that are commonly entered in the engine log.
Don Broussard A&P, IA, ATP
RV-9 Rebuild in Progress
1957 Piper Pacer
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11-26-2016, 03:56 PM
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Join Date: Dec 2009
Location: Boulder, CO
Posts: 4,428
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For me, if a part is in the engine parts manual, I use the engine logbook. That'll work for my RV-3B when it gets done, too. On my certified plane, I put whatever's in the aircraft parts manual in the airframe logbook.
The prop has its own logbook, an additional one.
Dave
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