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

SA12446AK

Installation of Sensenich Propeller Company 2G0M8SXX/C76PGF Composite, Ground Adjustable Propeller. Held by Sensenich Propeller Company, which holds 10 approved modifications in all. Last revised September 8, 2026. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.
Models
175, 175A, 175B, 175C, P172D, 170, 170A, 170B
Type certificates
3A17, 3A17, 3A17, 3A17, 3A17, A-799, A-799, A-799
On this site
Cessna P172 23 registered
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 26, 2026.