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What needs to be done to change teh max gross of an experimental plane?

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NA NA
IAC Member
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#1 Posted: 12/18/2010 18:54:23

I'm looking at adding a ferry tank to my Pitts and would like to know what is required to change the max gross of an experimental aircraft?  I assume some paperwork and flying off time at new gross?  Anyone have more details?

Thanks,

Grant



Grant
Dave Prizio
Young Eagles Pilot or VolunteerHomebuilder or Craftsman
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#2 Posted: 12/20/2010 15:55:15

Look at your operating limitations. They will tell you what you have to do in the case of a major modification. Typically you will need to contact the local FSDO and tell them what you are doing. They will then assign you a test period (usually 5 hours) and a test area.  After that you need to do the work, fly the test hours, make the appropriate logbook entries, and you're good to go.



Elwyn Roosevelt
Warbirds of America MemberHomebuilder or Craftsman
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#3 Posted: 1/3/2011 17:23:16

I talked to a DAR a couple of months ago about that subject, he said I would just have to do a new W&B and that was all. As long as you increase the weight you can't reduce the weight.

EV



Joe Norris
Vintage Aircraft Association MemberYoung Eagles Pilot or VolunteerHomebuilder or CraftsmanAirVenture Volunteer
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#4 Posted: 1/4/2011 13:09:53

Grant,

Changing the gross weight of an experimental aircraft is a "major change" and must be done in accordance with the procedure outlined in the operating limitations issued to the aircraft as a part of its airworthiness certificate.  Check your operating limitations and see what is says about "incorporating a major change", then follow the procedure as called out.

Make sure the aircraft can handle the gross weight increase both from the standpoint of structural loading as well as performance.  Probably not a problem with a Pitts but could be a serious problem with some designs.

Cheers!

Joe



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