SH5976NM
Combine installation of new rotor blades approved under STC SH5132NM and installation of Allied Signal Model T5317A or T5317B engines approved under STC SH2394NM. Held by Hillsboro Aviation INC, which holds 11 approved modifications in all. Last revised June 7, 2016. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Helicopter Textron
- Models
- 205A-1
- Type certificate
- H1SW
- On this site
- Bell 205 58 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.