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

SA1728CE

Modification of the Helio 295-030-401 carry-thru assembly to remove the pads welded to the main lower tube and install full length straps. Held by Jaars INC., which holds 20 approved modifications in all. Last revised February 27, 2007. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Helio Aircraft LLC; Helio Aircraft LLC; Helio Aircraft LLC; Helio Aircraft LLC; Helio Aircraft LLC; Helio Aircraft LLC; Helio Aircraft LLC
Models
H-250, H-295 (USAF U10D), H-391 (USAF UL-24), H-391B, H-395 (USAF L-28A or U-10B), H-395A, HT-295
Type certificates
1A8, 1A8, 1A8, 1A8, 1A8, 1A8, 1A8
On this site
Helio H-250 11 registered
Helio H-295 54 registered
Helio H-391 16 registered
Helio H-395 17 registered
Helio HT-295 13 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.