SR09346RC
Installation of main rotor blade grip with modified root radius and matching adapter in accordance with Helicopter Tech, Inc., Drawing List R47-120-252-1000, Revision IR, dated May 15, 2002, or later Federal Aviation Administration (FAA) approved revision. Held by Helicopter Tech INC.. Last revised November 18, 2011. System: rotorcraft systems.
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
- Models
- 47J, 47J-2, 47J-2A, 47G-2A, 47G-2A-1, 47G-3, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-3B-2A, 47G-4A, 47G-5, 47G-5A
- Type certificates
- 2H1, 2H1, 2H1, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3
- 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.