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

SA03118NY

Installation of Rolls-Royce 250 B17F/2 turbine engines, Hartzell HCB3TF7A/T9212DNK7 propellers, and associated structures and equipment. Held by Turbine 340 LLC. Last revised October 16, 2014. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Textron Aviation Inc.; Textron Aviation Inc.
Models
340, 340A
Type certificates
3A25, 3A25
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.