FAA · Supplemental Type Certificate
STC SE3331NM
Lycoming valve cover gasket
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 (24)
- E6EA Franklin Sp. z.o.o. · 4A-235-B
- E6EA Franklin Sp. z.o.o. · 4A-235-B2
- E6EA Franklin Sp. z.o.o. · 4A-235-B3
- E6EA Franklin Sp. z.o.o. · 4A-235-B31
- E6EA Franklin Sp. z.o.o. · 4A-235-B4
- E6EA Franklin Sp. z.o.o. · 4A-235-B6
- E9EA Franklin Sp. z.o.o. · 6A-350-C1
- E9EA Franklin Sp. z.o.o. · 6A-350-C1A
- E9EA Franklin Sp. z.o.o. · 6A-350-C1L
- E9EA Franklin Sp. z.o.o. · 6A-350-C1R
- E9EA Franklin Sp. z.o.o. · 6A-350-C2
- E9EA Franklin Sp. z.o.o. · 6A-350-C2A
- E9EA Franklin Sp. z.o.o. · 6A-350-D
- E9EA Franklin Sp. z.o.o. · 6A-350-D1
- E9EA Franklin Sp. z.o.o. · 6A-350-D1A
- E9EA Franklin Sp. z.o.o. · 6A-350-D1B
- E-238 Franklin Sp. z.o.o. · 6A4-150-B3
- E-238 Franklin Sp. z.o.o. · 6A4-150-B4
- E-238 Franklin Sp. z.o.o. · 6A4-165-B4
- E-238 Franklin Sp. z.o.o. · 6A4-200-C6
- E5EA Franklin Sp. z.o.o. · 6AS-335-A
- E5EA Franklin Sp. z.o.o. · 6AS-335-B
- E18EA Franklin Sp. z.o.o. · 6AS-350-A
- E18EA Franklin Sp. z.o.o. · 6AS-350-A1
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗