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

SR09313RC

Fabrication, modification, and installation of a new vertical fin spar in accordance with Global Helicopter Technology, Inc., Drawing number VTF-030-802, Revision B, dated April 5, 2001, or later FAA approved revision. Held by Global Spar LLC, which holds 3 approved modifications in all. Last revised December 8, 2011. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
International Helicopters Inc.; Richards Heavylift Helo Inc.; Richards Heavylift Helo Inc.; Rotorcraft Development Corporation; Rotorcraft Development Corporation; San Joaquin Helicopters; Southern Helicopter Inc.; Southwest Florida Aviation International; Southwest Florida Aviation International
Models
UH-1B, UH-1A, UH-1B, UH-1B, UH-1B, UH-1B, UH-1B, SW204 (UH-1B), SW204HP (UH-1B)
Type certificates
H5SO, H3SO, H3SO, H13WE, H3NM, H1RM, R00012AT, H6SO, H6SO
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.