FAA · Supplemental Type Certificate
STC SE5879SW
Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP.
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 (105)
- ATC 72 The Cessna Aircraft Company · A-40-4
- ATC 72 The Cessna Aircraft Company · A-40-2
- ATC 72 The Cessna Aircraft Company · A-40
- ATC 72 The Cessna Aircraft Company · A-40-3
- ATC 120 Command-Aire · R-670-B
- ATC 120 Command-Aire · R-670-D
- ATC 120 Command-Aire · R-670-F
- ATC 120 Command-Aire · R-670-H
- ATC 32 Curtiss-Wright Corporation · A70
- 3E1 Teledyne Continental Motors · IO-470 Series
- 3E3 Teledyne Continental Motors · TSIO-470 Series
- ATC 80 Teledyne Continental Motors · R-670
- E-162 Teledyne Continental Motors · W670 Series
- E-190 Teledyne Continental Motors · A-50 Series
- E-205 Teledyne Continental Motors · A-65 Series
- E-213 Teledyne Continental Motors · A-75 Series
- E-233 Teledyne Continental Motors · C85 Series
- E-233 Teledyne Continental Motors · C75 Series
- E-236 Teledyne Continental Motors · C-125 Series
- E-236 Teledyne Continental Motors · C-115 Series
- E-241 Teledyne Continental Motors · A100-2
- E-241 Teledyne Continental Motors · A100-1
- E-246 Teledyne Continental Motors · E-185 Series
- E-246 Teledyne Continental Motors · E-165 Series
- E-252 Teledyne Continental Motors · O-200 Series
- E-252 Teledyne Continental Motors · C90 Series
- E-253 Teledyne Continental Motors · C145 Series
- E-267 Teledyne Continental Motors · E-225 Series
- E-269 Teledyne Continental Motors · O-470 Series
- E-273 Teledyne Continental Motors · O-470 Series
- E-273 Teledyne Continental Motors · IO-470 Series
- E-281 Teledyne Continental Motors · FSO-470A
- E-292 Teledyne Continental Motors · FSO-526-C
- E-292 Teledyne Continental Motors · FSO-526A
- E-298 Teledyne Continental Motors · GO-300 Series
- E-303 Teledyne Continental Motors · GSO-526-A
- E11CE Teledyne Continental Motors · 6-260-A
- E1CE Teledyne Continental Motors · IO-360 Series
- E1SO Teledyne Continental Motors · 6-320-B
- E2CE Teledyne Continental Motors · GIO-470-A
- E2SO Teledyne Continental Motors · T6-320-A
- E3CE Teledyne Continental Motors · IO-346-A
- E3CE Teledyne Continental Motors · IO-346-B
- E5CE Teledyne Continental Motors · IO-520 Series
- E7CE Teledyne Continental Motors · GTSIO-520 Series
- E8CE Teledyne Continental Motors · TSIO-520 Series
- E9CE Teledyne Continental Motors · LTSIO-360 Series
- E9CE Teledyne Continental Motors · TSIO-360 Series
- 1E1 Textron Lycoming AVCO Corporation · VO-360 Series
- 1E1 Textron Lycoming AVCO Corporation · IVO-360-A1A
+ 55 more aircraft
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 ↗