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

SA793SW

PT6A-20 (turbo-prop) engines, 2 Hartzell HC-B3TN-3X/T10173-5 props, power compensator and pitch stabilizer system, outer panel fuel tanks, modified wing tip, lengthened nose, increase in angle of incidence of horizontal stabilizer. Held by Aircraft Industries of Canada LTD. (Canada), which holds 3 approved modifications in all. Last revised January 1, 1960. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Raytheon Aircraft Company
Models
18 Series
Type certificate
A-765
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 22, 2026.