FAA · Supplemental Type Certificate
STC SA412SO
Installation of Continental IO-520-E engines or two model IO-550E engines and either two McCauley model3AF32C504 or two model 3AF32C512 propellers.
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 (9)
- 3A10 The Cessna Aircraft Company · 310I
- 3A10 The Cessna Aircraft Company · 310Q
- 3A10 The Cessna Aircraft Company · 310N
- 3A10 The Cessna Aircraft Company · 310J
- 3A10 The Cessna Aircraft Company · 310P
- 3A10 The Cessna Aircraft Company · 310H
- 3A10 The Cessna Aircraft Company · 310G
- 3A10 The Cessna Aircraft Company · 310K
- 3A10 The Cessna Aircraft Company · 310L
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 ↗