STC SE7674SW

Supplemental type certificate · Superior Air Parts, Inc

Holder
Superior Air Parts, Inc · United States
Status
Current · Amended
Status date
October 25, 1993
Product
Engine
Certification basis
Part 21

From FAA DRS. DRS record last changed December 5, 2025.

What it approves

Grind nitrided cylinder barrels plus .010 over size pistons, to .010 and install SL10545P10 SL74241P10 compression rings and SL73857P10 Oil Control rings.

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 33

MakeModelData sheet
Textron Lycoming AVCO CorporationIO-540-AA1A51E4
Textron Lycoming AVCO CorporationLTIO-540-F2BDE14EA
Textron Lycoming AVCO CorporationLTIO-540-J2BE14EA
See all 33 models