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

SA76SW

Installation of Lycoming IGSO-540-A1A or -B1A engines with associated powerplant changes and increase gross weight to 7300 pounds takeoff and 7000 pounds landing. Held by Tom Roland, which holds 3 approved modifications in all. Last revised February 11, 1999. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
Models
H50, C50, J50, G50, F50, E50, D50E, D50B, D50A, D50 (L-23E), D50C
Type certificates
5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4
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.