Pricing & Surcharge Updates: On May 8, 2023, Honeywell updated our catalog pricing for select parts and ended surcharges for new catalog based (non-contract) orders. Read More
Scheduled Maintenance We will be conducting scheduled maintenance on May 19th from 10:00 PM EST to May 20th at 9:00 PM EST. During this time​ MyAerospace applications will be temporarily unavailable. We apologize for any inconvenience this may cause.

Your browser is not supported.

For the best experience, please access this site using the latest version of the following browsers:

Close This Window

By closing this window you acknowledge that your experience on this website may be degraded.

Table top view
Table top view

Supplemental Type Certificate Catalog

Discover Honeywell Aerospace’s range of STCs to enable Aftermarket Retrofits, Modifications and Upgrades (RMU) for Civilian Aircraft

A Supplemental Type Certificate (STC) is a document issued when an applicant has received approval from the Federal Aviation Administration (FAA) to modify an aircraft from the original design. The STC, which incorporates by reference the related Type Certificate (TC), approves not only the modification, but how the modification affects the original design. The STC and its related information (drawings, data, specifications) are the property of the STC holder.

If you have any questions about STC, RTU or the order form, please contact the Honeywell Aerospace STC team here: