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

SA4-885

Ceconite 101 covering of wings, fuselage, horizontal and vertical stabilizer, rudder and elevator. Held by Cooper Engineering Corporation, which holds 123 approved modifications in all. Last revised January 1, 1960. System: flight controls.

What it applies to

Kind of product
Aircraft
Design holder
Dart Aircraft Corporation
Models
G Series
Type certificate
674
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 8, 2026.