SA1389CE
Install tailwheel yoke assembly to accommodate a Cleveland600 x 6 wheel and either 600 x 6, 700 x 6 or 800 x 6 tires. Held by Zaegel William G. Last revised December 15, 1977. System: landing gear.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Alliance Aircraft Group LLC; Alliance Aircraft Group LLC; Alliance Aircraft Group LLC
- Models
- H-395A, H-391B, H-250
- Type certificates
- 1A8, 1A8, 1A8
- On this site
- Helio H-250 11 registered
Helio H-391 16 registered
Helio H-395 17 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.