# STC ST238CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Acron Aviation Inc., United States
- Description: Installation of BFGoodrich TCAS I.
- Applied: April 26, 1994
- Status date: April 1, 2025
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS 1A17](https://openairdocs.org/tcds/1A17)
- Certificate PDF: https://openairdocs.org/files/sha256/11/16/11164bb8440ac3b772d5b87f39b0498514b499f9884949fe08d12a4b1e78af01
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173277125720250806163652.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST238CH

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-159 ([TCDS 1A17](https://openairdocs.org/tcds/1A17))

## 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.

ST238CH Acron Aviation, Inc.

5353 52nd Street South East Grand Rapids, MI 49512-9704 Part 4b the Civil Air Regulations 1A17 Gulfstream Aerospace Corporation G-159 Installation of Traffic Alert and Collision Avoidance System I (TCAS I) Model TCAS791 in accordance with Drawing List, MDA159-00, Rev. B, dated January 27, 1998, or later FAA approved revision.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. Airplane Flight Manual Supplement, Drawing No. MDA159-09, Rev. B, FAA Approved June 8, 1998, or later FAA approved revision, is required on board for operation of the modified aircraft.

(See continuation sheet 3 of 3) April 26, 1994 August 4, 1994 June 08, 1998 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 November 17, 1994; February 13, 2002;

February 17, 2004; December 12, 2022; April 1, 2025

ST238CH 3

ST238CH Date Reissued: April 1, 2025

3. Airplane Maintenance Manual Supplement, Drawing No. MDA159-10, Rev. B, FAA approved June 8, 1998, or later FAA approved revision, is required.

4. 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.

...END...

## Every issue (2)

- April 1, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/11/16/11164bb8440ac3b772d5b87f39b0498514b499f9884949fe08d12a4b1e78af01)
- December 12, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/af/50/af50ab73882d482c8fff5917aaa2f51069f7a7525e9f00f116bf326dd1726450)

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