FAA · Supplemental Type Certificate
STC SG4-1240
Installation of Eonnex cover on aircraft surfaces.
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 (19)
- G-15 Laister-Kauffmann Aircraft Corporation · LK-10B
- G-15 Laister-Kauffmann Aircraft Corporation · LK-10A (Army TG-4A)
- Miscellaneous Miscellaneous · Miscellaneous
- GTC 19 Nelson Aircraft Corporation · BB-1
- 1G10 Schweizer Aircraft Corporation · SGS 1-26C
- 1G10 Schweizer Aircraft Corporation · SGS 1-26B
- 1G10 Schweizer Aircraft Corporation · SGS 1-26A
- 1G10 Schweizer Aircraft Corporation · SGS 1-26
- G-17 Schweizer Aircraft Corporation · SGU-1-19
- G-17 Schweizer Aircraft Corporation · SGU-1-19A
- G-18 Schweizer Aircraft Corporation · SGU 2-22EK
- G-18 Schweizer Aircraft Corporation · SGU 2-22E
- G-18 Schweizer Aircraft Corporation · SGU 2-22C
- G-18 Schweizer Aircraft Corporation · SGU 2-22B
- G-18 Schweizer Aircraft Corporation · SGU 2-22A
- G-18 Schweizer Aircraft Corporation · SGU 2-22
- G-18 Schweizer Aircraft Corporation · SGU 2-22CK
- GTC 5 Schweizer Aircraft Corporation · SGS 2-8
- GTC 5 Schweizer Aircraft Corporation · SGS 2-8A
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 ↗