# STC SA218AL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Airglas Inc., United States
- Description: Main gear shock strut restrictor.
- Applied: October 10, 1966
- Status date: August 18, 2012
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A8](https://openairdocs.org/tcds/1A8)
- Certificate PDF: https://openairdocs.org/files/sha256/db/b2/dbb25afd1afac2f5cd4854712c884d909d43ea6f437a6313d48fbbe0ddf981d6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FDC9A7E88FC54E9986257EAD00545B61.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA218AL

## ADs that name it (0)

None.

## Approved models (5)

- 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-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))

## 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

Part 3 of the Federal Aviation Regulations.

Main gear shock strut restrictor assembly per Airglas Engineering Co., Inc. drawing AGR-101-1 Revision “A”, dated April 7, 1967

Six ply 850x6 tires required inflation limits 30 PSI minimum, 35 PSI maximum.

LIMITATION OF ACCPLICABILITY: This approval should not be extended to other specific aircraft of this model 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 the aircraft.

3500 O’Malley Rd Anchorage, AK 99507

1A8 Make: Helio Model: H250, H295, H391B, H395, and H395A

Date of application : October 10, 1966

Date of issuance : November 17, 1966

Date reissued : April 28, 1967;

August 18, 2012

(Signature) August A. Asay Manager,Anchorage Aircraft Certification Office

(Title)

## Every issue (1)

- August 18, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/db/b2/dbb25afd1afac2f5cd4854712c884d909d43ea6f437a6313d48fbbe0ddf981d6)

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