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07-15-2014, 06:55 PM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Prop change
I am looking at an RV 6 that had a prop change from a Pacesetter 68/66-20 to a metal Sensenich 70CM6S9-0-76, both fixed pitch props. I believe the wt and balance was done with the pacesetter prop and can not find documentation of the prop change in the aircraft log book. What should be done to make the documents be in compliance with the FARs? Is there a big wt difference in the props? What would the process be to do a new wt and balance?
Thanks for any advise.
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07-15-2014, 07:05 PM
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Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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You need to find someone to loan or rent you a set of scales. Place them under all three wheels, with the plane level; Note the weights,measure the location of the wheels, do the calculation (lots of references around).
A harder question is whether or not the new prop is a 'major change' requiring you to re-enter phase 1 testing. If so you need to call the FISDO.
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07-15-2014, 08:56 PM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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If you can establish the weights of both props, you can establish the station by measuring and just calculate the new cg. No real need to reweigh.
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Jesse Saint
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07-15-2014, 10:03 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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You do need to go back into phase I with a prop change.
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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07-16-2014, 07:08 AM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Prop change
The thing with phase 1. I think the prop was probably put when he put on an exchange O-320 which was about 113 hours ago. So it has flown a while with it and it flys very nice. Just want to make sure paper work is in proper order. It was a fixed pitch to fixed pitch. I have heard that does not require a phase one?
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07-16-2014, 07:12 AM
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Join Date: Dec 2008
Location: Donie,Texas
Posts: 199
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phase 1
I believe a prop change requires Phase 1 for 5 hours. Check with a DAR, he should have you answers.
And , Yes the Sensenich is heavier. around 15-20lbs
__________________
Frank
RV6-N164FJ sold sadly
Legal Eagle w/Verner 3VW
Rans S7s
RV4- in progress
Last edited by PropMan : 07-16-2014 at 07:14 AM.
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07-16-2014, 07:13 AM
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Join Date: Jul 2010
Location: Orlando, FL
Posts: 1,077
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Quote:
Originally Posted by britt fincher
The thing with phase 1. I think the prop was probably put when he put on an exchange O-320 which was about 113 hours ago. So it has flown a while with it and it flys very nice. Just want to make sure paper work is in proper order. It was a fixed pitch to fixed pitch. I have heard that does not require a phase one?
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I think that depends on how your operating limitations are written. Best to check with Mel.....
__________________
Chris Smith
Maule M5-180C (Sold)
RV-6 O-360 CS (Sold)
RV-4 O-360 FP (Sold)
Full-time in the other type of RV....
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07-16-2014, 07:20 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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With the current operating limitations a prop change requires a new 5 hour minimum phase I unless the props are the same manufacturer, model and pitch.
Your op lims may differ. YOUR op lims are the controlling factor.
__________________
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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07-16-2014, 07:29 AM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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What Mel said. It depends on the Operating Limitations. If they say something like, "After incorporating a major change as described in 21.93, the aircraft owner is required to reestablish compliance with 91.319(b) and notify the geographically responsible FSDO of the location of the proposed test area. The aircraft owner must obtain concurrence from the FSDO as to the suitability of the proposed test area. If the major change includes installing a different make and model of engine or propeller, the aircraft owner must fill out a revised Form 8130-6 to update the aircraft's file in the FAA Aircraft Registry..." After the Phase 1 is completed, a log book entry must be made.
With all of this said, we have asked our local FSDO on several occasions for approval to do just this. Their response to our phone request was, "Have fun."
A deviation from the rules 113 hours ago, if it in fact was a deviation, does not affect what you have to do, except you might want to update both the engine and prop information on the 8130-6 and in the aircraft logbooks.
In short, read your operating limitations and go from there.
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Jesse Saint
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07-16-2014, 12:58 PM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Prop change
I did a little more digging and found the operating limitations which were rewritten along with a new Special Airworthiness. This one shows the Sensenich prop, however I have not seen in the log book where the phase one was done or the prop was put on yet. Does it also have to be in the log book?
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