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  #1  
Old 04-21-2016, 04:06 AM
Piper J3's Avatar
Piper J3 Piper J3 is offline
 
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Default VFR vs IFR Static Leak Down Rates

Can someone advise me if there is a different allowable leak down rate for VFR vs IFR? Are both 100'/min when altimeter is elevated 1000' above AGL?
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Jim Stricker
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PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 622

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
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  #2  
Old 04-21-2016, 06:33 AM
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There is no static leak test requirement for a "VFR" (not IFR) aircraft.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
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  #3  
Old 04-21-2016, 12:03 PM
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Bayou Bert Bayou Bert is offline
 
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Default The Real Test?

Walt, that's the real test?
Pump system up to 1000' and time leak down,
and it has to be no more than 100'/min?


Thanks
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  #4  
Old 04-21-2016, 12:45 PM
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Quote:
Originally Posted by Bayou Bert View Post
Walt, that's the real test?
Pump system up to 1000' and time leak down,
and it has to be no more than 100'/min?


Thanks
That is correct. (1000ft above current elevation)
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #5  
Old 04-21-2016, 03:04 PM
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Piper J3 Piper J3 is offline
 
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Default

Quote:
Originally Posted by Walt View Post
There is no static leak test requirement for a "VFR" (not IFR) aircraft.
So let me ask you this... If my static system leaks more than 100'/min is it OK to schedule a VFR transponder certification test?
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 622

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #6  
Old 04-21-2016, 03:29 PM
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RV3bpilot RV3bpilot is offline
 
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I would not accept any leakage, but that's me. I found that my Vertical speed indicator glass was leaking so I put a thin coat of epoxy around the edges of the glass and so far all is good.
Then I found that air was passing from the static side to the pitot side of the air speed indicator, {not fixable and it was new} so I purchased a new one.
Then I found some plastic fittings leaking...Ahhhhhhh
Yes very time consuming to get it right...
Be patient you will get it right..
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  #7  
Old 04-21-2016, 03:53 PM
Bavafa Bavafa is offline
 
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Location: Sacramento, CA
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Default

Quote:
Originally Posted by Piper J3 View Post
So let me ask you this... If my static system leaks more than 100'/min is it OK to schedule a VFR transponder certification test?
I don't think Mode C transponder test has any thing to do with static leak test. But finding a leak might not be that difficult and worth fixing.
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N825SM RV7A - IO360M1B - SOLD
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  #8  
Old 04-21-2016, 04:29 PM
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Walt Walt is online now
 
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Quote:
Originally Posted by Piper J3 View Post
So let me ask you this... If my static system leaks more than 100'/min is it OK to schedule a VFR transponder certification test?
Yes, there is no requirement to test this for a 'VFR' transponder check. Would it be a good idea to fix it... yes, but don't let that stop you from getting the xpdr checked.
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Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #9  
Old 04-21-2016, 05:53 PM
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Piper J3 Piper J3 is offline
 
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Default

Thanks guys... I will get Transponder test now and work on static system integrity this summer when I remove fuel tank and baggage compartment bulkhead.
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Jim Stricker
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 622

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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