The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

SA1415WE

ONE ONLY STC, SN 18-832: Installation of Lycoming O-320-A2B Engine and McCauley 1A17OGM7448 Propeller. Held by Ed'S Airmotive INC.. Last revised May 15, 1967. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Piper Aircraft Inc.
Models
PA-18S
Type certificate
1A2
On this site
Piper PA-18 Super Cub 3,620 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.