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

SE3-612

Installation of Bendix Model RS-10DD-1 single point fuel injection system to replace the Bendix-Stromberg NAR-9B carburetor. Held by Textron Aviation INC, which holds 723 approved modifications in all. Last revised December 12, 2016. System: engine.

What it applies to

Kind of product
Engine
Design holder
Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division
Models
Wasp Jr. B-5, Wasp Jr. SB-2, Wasp Jr. SB-3, Military R-985 Series
Type certificates
E-123, E-123, E-123, TC 5E-1
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 21, 2026.