STC's for GA Aircraft
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STC's for GA Aircraft
If you have a Day VFR light aircraft that is fitted with traditional vacuum instruments (AI and DG) can you legally fit modern electronic instruments to replace them without an STC? All of the replacement candidates have STC's for most common GA types but not the aircraft that I would seek to install in.
Because these instruments are over and above what is required for Day VFR it seems ridiculous to even need an STC but that is what my avionics guy tells me is required plus an electrical load analysis (these instruments use absolutely minimal power).
Because these instruments are over and above what is required for Day VFR it seems ridiculous to even need an STC but that is what my avionics guy tells me is required plus an electrical load analysis (these instruments use absolutely minimal power).
Quick answer - any change to a type rated aircraft will need an STC - so yes.
(STC not required for maintenance, repairs, painting, but just about anything else...)
Yes 717 - or an EO, though depending on what is changing, that could be v. expensive.
(STC not required for maintenance, repairs, painting, but just about anything else...)
Yes 717 - or an EO, though depending on what is changing, that could be v. expensive.
Last edited by drpixie; 6th Feb 2023 at 09:53. Reason: additional
An EO for the Dynon stuff isn't overly expensive. I think I have a quote somewhere for one being around $1,500 to install the Dynon AP in a Comanche, so don't rule that route out 'just because' something isn't STC'd for your particular application.