SR01039SE
Fabrication of tail boom mounted strakes in accordance with Master Drawing List Number BL-UH1H-01, Revision D, dated September 10, 2001, or later Federal Aviation Administration (FAA)-approved revision; and installation of this strake system. Held by Blr Aerospace LLC., which holds 33 approved modifications in all. Last revised August 23, 2018. System: rotorcraft systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Garlick Helicopters Inc.; Garlick Helicopters Inc.; Garlick Helicopters Inc.; Garlick Helicopters Inc.; Garlick Helicopters Inc.; Tamarack Helicopters Inc.; Western International Aviation Inc.; Williams Helicopter Corporation; Hawkins & Powers Aviation Inc.; US Helicopter Inc.; US Helicopter Inc.; Precision Helicopters LLC
- Models
- TH-1F, UH-1F, UH-1P, UH-1B, UH-1H, UH-1F, UH-1H, UH-1H, UH-1B, UH-1B, UH-1H, UH-1H
- Type certificates
- H12NM, H12NM, H12NM, H13WE, H13WE, H7NE, H15NM, H7SO, H1RM, H3SO, H3SO, R00005SE
- On this site
- Garlick Helicopters Inc UH-1 10 registered
Williams Helicopter Corp UH-1 7 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 22, 2026.