SR09176RC
Modification of the vertical fin spar. Held by Midwest Aerospace Tc LLC, which holds 11 approved modifications in all. Last revised February 8, 2023. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Hagglund Helicopters LLC; Richards Heavylift Helo Inc.; Southwest Florida Aviation International; Garlick Helicopters Inc.
- Models
- UH-1H, UH-1H, SW205 (UH-1H), UH-1H
- Type certificates
- H15NM, H3SO, H6SO, H13WE
- On this site
- Garlick Helicopters Inc UH-1 10 registered
Southwest Florida Aviation SW205 5 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 7, 2026.