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

SA03283CH

Installation of a 450 H.P. Pratt & Whitney Model R985-AN-14B Engine with Hamilton Standard Propeller Model 6167A-12 propeller and Model 2D30-237 Hub. Held by Rare Aircraft LTD, which holds 10 approved modifications in all. Last revised December 5, 2013. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
Consolidated Vultee Aircraft Corporation Stinson Division
Models
V-77
Type certificate
A-774
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 5, 2026.