SA381SO
Revised (1) brake handle per Drawing 9R, (2) seat belt anchor straps to seat per Drawing 10R, (3) rudder control system springs per Drawing 11R. Held by Robinson W F. Last revised March 14, 1968. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Univair Aircraft Corporation
- Models
- 415D
- Type certificate
- A-787
- 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.