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

SA1904WE

Installation of Vibration Isolation Products (VIP) engine mount P/N VIP-50804-10 on various aircraft as shown on FAA Approved Model List (AML) No. SA1904WE. Held by Ftg, INC., which holds 9 approved modifications in all. Last revised January 3, 2023. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Twin Commander Aircraft Corporation; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Textron Aviation Inc.; Frakes Aviation; Frakes Aviation; Frakes Aviation
Models
520, B50, C50, D50, D50A, D50B, D50C, D50E, G-44, G-44A, SCAN Type 30
Type certificates
6A1, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, A-734, A-734, A-734
On this site
Grumman SCAN TYPE 30 9 registered
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 November 2, 2026.