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New FAA Phase 1 program

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  • New FAA Phase 1 program

    AC 90-89C was released to supersede AC 90-89B.
    A worthy read as you are building experimental...allows bypassing the 40 hour restricted area time burn.

    Chapter 2 is the nuts and bolts of the new parameters, what in short allows builders to develop their own Task-Based flight program, to accurately check off all the safety parameters of their aircraft, create an AOH, and once done, move on to Phase 2 flight.

    https://www.faa.gov/documentLibrary/.../AC_90-89C.pdf

  • #2
    That's great news!
    potential to cut phase 1 in half is my guess

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    • #3
      From what I understand so far, I like it. Hopefully it helps builders develop a plan and actually accomplish it. I find that most guys do very little actual flight testing and literally just fly in circles for 40hrs. For me, 40hrs wasn’t enough.
      Scratch Built 4-place Bearhawk. Continental IO-360, 88" C203 McCauley prop.

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      • #4
        Reading the AC, especially para 2.1.6, it seems to me the guidance offered tries to bring order to chaos. Instead of just "flying off" hours, the builder has a defined procedural structure to Phase 1 testing and will have real data points instead of just wishful thinking. The builder will certainly have a better understanding of the aircraft, and the implication of Chapter 2 seems to indicate that a thoughtful and well-planned Phase 1 flight test has the potential to be much safer. I suppose, given the complexity of some aircraft Phase 1 could even be longer than 25 hours. I think this is a leap forward for the EAB world. I already have my EAA test flight book (along with a few others) and I will do what it takes to satisfy my safety requirements, along with the FAA regs. Who know...a bonus may even be a lower insurance rate and higher resale value. "He who has the best notes wins." is great advice in building and life in general.

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        • #5
          Just read the whole thing sans the ultra light and canard stuff. I like how detailed and task specific it is.
          N678C
          https://eaabuilderslog.org/?blprojec...=7pfctcIVW&add
          Revo Sunglasses Ambassador
          https://www.youtube.com/channel/UCQ0...tBJLdV8HB_jSIA

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          • #6
            I have not read it yet. I look forward to learning, and applying flight test to an aircraft I've built. Great that we have a standard to follow through the EAA's flight test guide. With that being said, one of my first goals to break in the engine properly. I have no experience, but I sense the Break-in could take ten or more hours. Then I'll be off to testing IAW a good flight test program.
            Brooks Cone
            Southeast Michigan
            Patrol #303, Kit build

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            • #7
              For those not familiar with it, the EAA does a good job of providing documentation and structure to get your plane safely in the air.

              Flight Test Cards are one of those items.

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              • #8
                There has been lots of discussion from DAR's about how this "memo" hasn't been populated down the FAA river to actually change the rulings and make it active yet. The EAA has a webinar might tell us where things are.

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                • alaskabearhawk
                  alaskabearhawk commented
                  Editing a comment
                  I signed up for it this morning

              • #9
                If you missed the webinar, you can watch it again as it was recorded. But, good info.

                It is in fact, effective currently. Many DAR's and FSDO's may not know about it, but it's true and they can use AC 90-89C with a letter of deviation that is being signed and sent out as well.

                Best part as I see it is it will give everyone a purpose and checklists to ensure the safety of your aircraft, you as a pilot, and any future pilots based on you collecting data via the task based system.

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                • #10
                  I was signed up to watch, but got busy and will have to watch it on the recording. Should be a good improvement. I suspect if you are diligent you can cut time off the 40 hours. I have seen/read the task list, it is nearly all stuff I would have done anyway
                  N678C
                  https://eaabuilderslog.org/?blprojec...=7pfctcIVW&add
                  Revo Sunglasses Ambassador
                  https://www.youtube.com/channel/UCQ0...tBJLdV8HB_jSIA

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                  • #11
                    Just watched the webinar, very good presentation. I have the current EA Test Card Book V1.0 and the Task-Based Approach to Phase I

                    Certainly if you are organized and have tasks in mind for every test flight I figure you can cut some time off the 40 hours. Apparently some have just flown for 40 hours and called it good, with my type of flying I would have don’t most of the task testing without the card/book.

                    My biggest things will be:
                    Stalls in all flap configurations with and without power
                    Vx
                    Vy
                    Takeoff and landing distances at different weights and CG’s
                    N678C
                    https://eaabuilderslog.org/?blprojec...=7pfctcIVW&add
                    Revo Sunglasses Ambassador
                    https://www.youtube.com/channel/UCQ0...tBJLdV8HB_jSIA

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