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"In a move intended to help keep vintage aircraft safely maintained, restored and flying, the FAA has issued new Advisory Circular AC 23-27, Parts and Materials Substitution for Vintage Aircraft, dated May 18, 2009. The AC, created by the FAA’s Small Airplane Directorate in Kansas City, Missouri, was a joint effort by the FAA in consultation with industry representatives including EAA and EAA’s Vintage Aircraft Association."
link to AC 23-27 here: http://rgl.faa.gov/REGULATORY_AND_GU...AC%2023-27.pdf
If I'm reading this right, this will let us use parts STC'ed "for like aircraft" or to SAE or ASTM standards with only a logbook entry to note substitution of materials on minor parts & alterations, or 337 for major alteration / substitution. Aside from making most of the hydraulic cables and replacement windows on field ("From NAPA Aircraft Parts, Lowe's Aviation, or Home & Aircraft Depot") legal now, how will this affect us?
How do they define "like aircraft" - will we be eligible for parts STC'ed for a PA-12, or only for other Taylorcraft models, for example?
In other notes, F-19 spars are 1/16th inch taller than BL12-65. Better to find this out when assembling the hardware prior to trammeling (when your strut attach fittings don't fit), than when your wings are covered, and you're wondering why they don't fit on the plane....
link to AC 23-27 here: http://rgl.faa.gov/REGULATORY_AND_GU...AC%2023-27.pdf
If I'm reading this right, this will let us use parts STC'ed "for like aircraft" or to SAE or ASTM standards with only a logbook entry to note substitution of materials on minor parts & alterations, or 337 for major alteration / substitution. Aside from making most of the hydraulic cables and replacement windows on field ("From NAPA Aircraft Parts, Lowe's Aviation, or Home & Aircraft Depot") legal now, how will this affect us?
How do they define "like aircraft" - will we be eligible for parts STC'ed for a PA-12, or only for other Taylorcraft models, for example?
In other notes, F-19 spars are 1/16th inch taller than BL12-65. Better to find this out when assembling the hardware prior to trammeling (when your strut attach fittings don't fit), than when your wings are covered, and you're wondering why they don't fit on the plane....
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