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

SE40CH

Rebuilt modification of starter drive clutch assembly. Held by Harmony Machine Prod INC, which holds 2 approved modifications in all. Last revised November 3, 2003. System: engine.

What it applies to

Kind of product
Engine
Design holder
Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors
Models
O-200-B, O-200-A, O-200-C
Type certificates
E-252, E-252, E-252
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 5, 2026.