# STC SA1590CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: JAARS Inc., United States
- Description: Modification of the Helio, P/N 391-030-401-30, main spar carry-thru assembly.
- Applied: December 10, 1979
- Status date: February 27, 2007
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8)
- Certificate PDF: https://openairdocs.org/files/sha256/48/2d/482db9bf636b645eed06a2383e87b34f9837ef01d989bd6f8123314077f2be52
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/72677925C176CA55862572DC00641BE7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1590CE

## ADs that name it (1)

- [AD 82-16-08](https://openairdocs.org/ad/82-16-08): Left and Right Main Spar Carry-Thru Assembly · Helio H-250, H-295 (USAF U10D), H-391 (USAF UL-24) and 4 more. Effective Aug 3, 1982. Cited in the text

## Approved models (7)

- Helio Aircraft LLC H-250 ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-295 (USAF U10D) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-391 (USAF UL-24) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-391B ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-395 (USAF L-28A or U-10B) ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC H-395A ([TCDS 1A8](https://openairdocs.org/tcds/1A8))
- Helio Aircraft LLC HT-295 ([TCDS 1A8](https://openairdocs.org/tcds/1A8))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

This certificate issued to: JAARS, Inc.

7601 Radin Road P. O. Box 248 Waxhaw, North Carolina 28173-0248

Part 3 of the Civil Air Regulations.

Original Product - Type Certificate Number : 1A8 Make : Helio Model : H-391, H-391B, H-395, H-395A, H-250, H-295, and HT-295 Description of Type Design Change:

Modification of the Helio, P/N 391-030-401-30, main spar carry-thru assembly per Clarence H. Brent Drawing B-401 (4 sheets) and Installation Instructions stamped “FAA Approved” with a date of May 30, 1980; Drawing B-401, Revision D (5 sheets) and Installation Instructions stamped “FAA Approved” with a date of March 17, 1982, or later.

1.) This approval should not be extended to other specific airplanes of these models on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

2.) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date reissued : May 31, 1983; December 5, 2006;

February 27, 2007 Date amended : March 19, 1982; April 12, 1982

Original signed by Eual Conditt

( Signature) Eual M. Conditt, Jr.

Associate ACO Manager, Airframe & Services Wichita Aircraft Certification Office (Title) Date of application : December 10, 1979 Date of issuance : May 30, 1980

## Every issue (2)

- February 27, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/48/2d/482db9bf636b645eed06a2383e87b34f9837ef01d989bd6f8123314077f2be52)
- December 5, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/bb/bc/bbbc2a4412811be78c91ddf22118b709e7b8f6aceea6d7d622e78e95bfea4ece)

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