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  1. Replies
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    Try AC 43.13-1b Chapter 11. Iíd have to look up...

    Try AC 43.13-1b Chapter 11. Iíd have to look up the paragraph, but thatís the approved data.


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    In my book, a change to the basic design of an...

    In my book, a change to the basic design of an electrical system would be a change from generator to alternator, change from lead acid battery to a different chemistry battery, adding or removing bus...
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    How about using something like this? 207BH4S...

    How about using something like this?
    207BH4S Dixon Valve Brass Bulkhead Anchor Coupling Adapter - 1/4" Fema – HoseWarehouse

    or
    207BH2 Dixon Valve Brass Bulkhead Anchor Coupling Adapter - 1/8"...
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    And if you went with a bulkhead fitting, why even...

    And if you went with a bulkhead fitting, why even weld it, just have the tab big enough that you can drill for the bulkhead fitting to go into and screw the nut on to hold in place, after all, that's...
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    I don't have an answer to that, just seen a lot...

    I don't have an answer to that, just seen a lot of 4130 that someone tried to braze and it looked great on the front. Turn it over and it was really ugly! As I stated before, jet a piece of 4130 and...
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    But all of that was brazed to 1020 tubing, not...

    But all of that was brazed to 1020 tubing, not 4130.


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    Most inspectors donít know anything about little...

    Most inspectors donít know anything about little airplanes, much less old (predecessor) regulations. Always take the stance of ďshow me the regulatory requirementĒ when a guy says ďyou canítĒ or ďyou...
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    Minor vs minor change

    21.93 only delineates where an STC is required. The definition in Part 1.1 gives the difference between a major Alteration and Minor Alteration, then supported by Part 43 Appendix A. Best source for...
  9. Replies
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    Brazing mild steel is never an issue. Iíve only...

    Brazing mild steel is never an issue. Iíve only seen the cracking with brazing 4130. Could be an issue with the type brazing rod, donít know.


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  10. Replies
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    And so it begins

    I will suggest getting a piece of 4130 sheet and braze something to it. Look at the back side to see if you have any cracks. If they are there, they will be ugly and very visible. If you donít get...
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    Just to add a couple data points, original Piper...

    Just to add a couple data points, original Piper tank on my PA-16 is 8.5 lbs. Dakota 24 gallon tank is 12 lbs. I didnít weigh the covers or other installation hardware, just the tanks. Iím keeping my...
  12. Thread: Garmin 400w

    by dgapilot
    Replies
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    438

    The 400w is only a GPS, the 430W is GPS, VHF nav,...

    The 400w is only a GPS, the 430W is GPS, VHF nav, Glide Slope and VHF Com. Not apples to oranges. Most of the 430Ws Iíve seen used are asking $6k or more. For that, you can get a new GNC355. Granted...
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    Brazing isnít a good idea if it is on 4130. May...

    Brazing isnít a good idea if it is on 4130. May look good on the outside, but likely all cracked on the inside. Not sure if it is the filler metal or the heat, but Iíve seen lots of 4130 that was...
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    Several issues would determine if you can solo...

    Several issues would determine if you can solo from the back. First is weight and balance. If alone in the aircraft, are you still within the CG range? Next is access to controls. Where is your carb...
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    Last Piper produced Pawnee was 8156024, so 1981...

    Last Piper produced Pawnee was 8156024, so 1981 would be the last PA-25 with a Piper data plate.


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    Lots of factories built wood spars either with...

    Lots of factories built wood spars either with splices, or laminated. Aeronca did it a lot. I have a copy of the Howard process spec for how they did splices and laminations. Even in the Ď30s and 40s...
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    Suggest that you take a survey of other PA_18s...

    Suggest that you take a survey of other PA_18s around the same serial number and look in the wings to see if similar spars are out there. That would help solve the mystery of "done at the factory".
  18. Normally addressed before cover, not sure if you...

    Normally addressed before cover, not sure if you can bend things to line up after it's covered.
  19. Do you know what mount you have now? It might be...

    Do you know what mount you have now? It might be possible to do a deviation to your existing CC STC to allow a different engine mount, but you indicated the existing mount doesn't provide clearance....
  20. If I understand this, the 101950-1 mount is...

    If I understand this, the 101950-1 mount is nonexistent? That is a bigger issue that the mount rubbers. Sounds like the STC is pretty much worthless for a dynafocal installation if that part number...
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    Iíve installed many a windshield without removing...

    Iíve installed many a windshield without removing the retaining strips. Just has to be the hottest day of the year out in the sun! Itís not hard so long as it is trimmed properly.


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    It is in the first part of the definition of...

    It is in the first part of the definition of ďAirworthyĒ must meet type design or properly altered condition, and be in condition for safe operation.

    If it doesnít meet the drawings, then it...
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    I've kept a PA-18A-150 up with the engine shut...

    I've kept a PA-18A-150 up with the engine shut down (and tow rope) for over a half hour from 2000'. I even outclimbed one of the 2-33s that had a student in it. Supercubs glide pretty good...
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    Curious if anyone has made a similar tool for...

    Curious if anyone has made a similar tool for doing the bungees on a PA-16.. the PA-16 has the bungees forward of the fuselage truss. Iíd be interested in pictures or drawings.


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  25. Thread: Trim Tab

    by dgapilot
    Replies
    14
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    721

    Flutter is not your friend! Sent from my...

    Flutter is not your friend!


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