STC ST553CH
FAA DRS lists ST553CH as Current · Reissued, held by Monogram Systems, for Boeing 767-200 Series, Boeing 767-300 Series, and Boeing 747-400 Series, and 1 more aircraft configuration. Recorded change: Installation of Envirovac toilets P/N's7900061-1, 7900062-1, 7900063-1, 7900064-1. Snapshot dated June 30, 2026.
Recorded modification
What the FAA record covers
ST553CH identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.
Applicability
Aircraft named in FAA DRS
Named aircraft: Boeing 767-200 Series, Boeing 767-300 Series, and Boeing 747-400 Series, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.
Related other aircraft modifications STCs
Install heated pitot tube and new static system.
FAA holder: Cub Crafters Inc
FAA record reference
- STC number
- ST553CH
- Product
- Aircraft · Large Multi-Engine
- Country
- United States
- Application date
- July 17, 1996
- Revision date
- May 26, 2009
- CFR references
- Part 21, Part 25