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

SA00633LA

Installation of an electric constant speed propeller MTV-18B/180-7 and control unit P-120-U. Held by American Propeller Service, which holds 8 approved modifications in all. Last revised May 15, 1998. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
Models
PA-28-180, PA-28-181
Type certificates
2A13, 2A13
On this site
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,633 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 7, 2026.