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

SH2945NM

Addition of a twist grip on the cyclic pitch stick to provide hand operated yaw control. Held by Narad James L, which holds 2 approved modifications in all. Last revised June 14, 1985. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc; Scotts-Bell 47 Inc
Models
47G-2A, 47G-2A-1, 47G-3, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A, 47G-4, 47G-4A, 47G-5, 47G-5A, 47, 47B, 47B3, 47D, 47D1, 47E, 47G, 47G-2, 47H-1
Type certificates
2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, H-1, H-1, H-1, H-1, H-1, H-1, H-1, H-1, H-1
On this site
Bell-Carson 47 5 registered
Bell 47 478 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 October 20, 2026.