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

SE8652SW

Installation of a flexible hose from the Propeller Primary Governor to the Fuel Control Unit. Held by Air Tractor INC. Last revised October 10, 2007. System: engine.

What it applies to

Kind of product
Engine
Design holder
Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.; Pratt & Whitney Canada Corp.
Models
PT6A-67AF, PT6A-67AG, PT6A-67F, PT6A-67R, PT6A-45R, PT6A-60AG, PT6A-65AG, PT6A-65AR, PT6A-65B, PT6A-65R
Type certificates
E26NE, E26NE, E26NE, E26NE, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA
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 20, 2026.