SR01727SE
Fabrication of Boundary Layer Research (BLR) Dual Tail Boom 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.; San Joaquin Helicopters; San Joaquin Helicopters; San Joaquin Helicopters; Arrow Falcon Exporters Inc.; Arrow Falcon Exporters Inc.; Arrow Falcon Exporters Inc.
- Models
- OH-58A, OH-58A+, OH-58C, OH-58A, OH-58A+, OH-58C, OH-58A, OH-58A+, OH-58C
- Type certificates
- R00006DE, R00006DE, R00006DE, R00002LA, R00002LA, R00002LA, H22NM, H22NM, H22NM
- On this site
- Arrow Falcon Exporters Inc OH-58 8 registered
Garlick Helicopters Inc OH-58 20 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.