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

SE5820SW

Installation of Airmotive exhaust valve, P/N AEC-637781. Held by Continental Motors, INC., which holds 57 approved modifications in all. Last revised October 31, 2016. System: engine.

What it applies to

Kind of product
Engine
Design holder
Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors
Models
IO-470-S, IO-470-U, IO-470-N, IO-470-M, IO-470-L, IO-470-H, IO-470-F, IO-470-D, IO-470-V, IO-470-E, TSIO-470 Series, IO-520 Series, GTSIO-520 Series, TSIO-520 Series
Type certificates
3E1, 3E1, 3E1, 3E1, 3E1, 3E1, 3E1, 3E1, 3E1, 3E1, 3E3, E5CE, E7CE, E8CE
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.