The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SA156SO

Installation of Turbocharged Lycoming G0-480-G1D6 engine (STC SE124SO) per FAA Sealed Roto-Master (Rajay/Riley) drawing List R0018. FAA approved Flight Manual Supplement, dated November 24, 1965 or later, FAA approved revision and Roto-Master (RAJAY/Riley) Turbo Owner s Manual required with this installation. Held by Talco Aviation, which holds 49 approved modifications in all. Last revised August 31, 2023. System: engine.

What it applies to

Kind of product
Aircraft
Design holder
Helio Aircraft LLC
Models
H-295 (USAF U10D)
Type certificate
1A8
On this site
Helio H-295 54 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 5, 2026.