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

SA1317CE

Chrome-plated brake disc installation. Held by Engineering Plating & Processing, INC., which holds 30 approved modifications in all. Last revised March 1, 1978. System: landing gear.

What it applies to

Kind of product
Aircraft
Design holder
The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.; The New Piper Aircraft Inc.
Models
PA-28-180, PA-28-140, PA-28-160, PA-28-235, PA-28R-180, PA-28R-200, PA-28-150
Type certificates
2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13
On this site
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,637 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 19, 2026.