Getting a new prop installed on the -8.
I think I read somewhere that this puts the plane back into a partial phase 1 - true?
Do you need an FSDO signoff for this?
Thanks
If it is a different diameter and/or pitch, a change of construction, wood/composite/metal, or any other change that will affect flight characteristics you will need to return to phase I for at least 5 hrs. If you are changing F/P to or from a controllable pitch, then you need to submit new 8130-6.
Swapping one Hartzell metal CS 72" prop for a new Hartzell metal CS 72" prop.
The new one is a blended airfoil
Appropriate post maintenance test flight should be accomplished, but a return to phase I is not required.
Ah ok and so no FSDO involvement, correct?
How about swapping from a 72" composite CS prop to a 74" aluminum CS prop? Does that require a letter to the FSDO?
If it is a different diameter and/or pitch, a change of construction, wood/composite/metal, or any other change that will affect flight characteristics you will need to return to phase I for at least 5 hrs. If you are changing F/P to or from a controllable pitch, then you need to submit new 8130-6.
I am contemplating a F/P to C/S conversion. I see from your post that I will need a new Airworthiness. Is this a situation in which a DAR can handle the paperwork, instead of involving the FSDO? I m reading in other threads how the FSDO can really mess up experimental aircraft paperwork, and I'd like to avoid as many headaches as possible.
If there is a document that spells these requirements out, please provide a pointer/link. The inconsistent answers I receive from different authorities is frustrating.
Thanks Mel. Very helpful. Is this the correct interpretation?
1) For a "Major Change" - notify the FSDO of the change and put the plane back into phase 1 for an unspecified amount of time.
2) If the "Major Change" includes a change in engine *type* or converting from a FP to CS prop, notify the FSDO and fill out a new form 8130-6. Back to phase 1 for a minimum of 5 hours.
3) Minor changes don't require notifying the FSDO or a form 8130-6. A “minor change” is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the product. All other changes are “major changes.” (quoting from CFR 21.93).
"Appreciable effect" would appear quite subjective.
So getting back to my practical application at hand:
1) Changing from a FP to CS prop. Action: Very clear. Notify FSDO and complete form 8130-6. Back to phase 1 for a min of 5 hours.
2) Changing engine in a flying experimental RV from a certified O-360 to experimental IO-360 Action: As long as there is no appreciable effect... there is no need for a new phase 1 or form 8130-6.
Is that correct?
Brian
5 hour minimum applies to all major changes.
Thanks for clarifying, Mel.
In your opinion is a change from a certified O-360 to an experimental IO-360 a major change? It doesn't seem so to me based on the definition in 21.93 but the local DAR I discussed this with seems to think so.
I would not consider this a major change.