FAA · Supplemental Type Certificate
STC SA5175SW-D
S-TEC System 60 two axis automatic flight guidance system ST-078, with optional automatic electric trim. system.
What is an STC?
A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.
Applicable aircraft (5)
- A31EU Partenavia Costruzioni Aeronauticas S.p.A. · P68C
- A31EU Partenavia Costruzioni Aeronauticas S.p.A. · P68C-TC
- A31EU Partenavia Costruzioni Aeronauticas S.p.A. · P68 \"Observer\"
- A31EU Partenavia Costruzioni Aeronauticas S.p.A. · P68 TC \"Observer\"
- A31EU Partenavia Costruzioni Aeronauticas S.p.A. · P68B
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗