# STC ST155CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Acron Aviation Inc.
- Description: Installation of BF Goodrich Avionics systems TCAS791 traffic alert and collison avoidance system I (TCASI).
- Status date: April 1, 2025
- Data sheets: A22CE, A22CE, A22CE, A22CE, A22CE
- Certificate PDF: https://openairdocs.org/files/sha256/9b/5a/9b5a2eca8be0e0433c236615e13aa0690b7cafc81112b773a63bc12110777fd2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122201238820250806162725.0001
- Page: https://openairdocs.org/stc/ST155CH

## ADs that name it

None.

## Approved models (5)

- Textron Aviation Inc. 500 (TCDS A22CE)
- Textron Aviation Inc. 550 (TCDS A22CE)
- Textron Aviation Inc. 552 (TCDS A22CE)
- Textron Aviation Inc. 560 (TCDS A22CE)
- Textron Aviation Inc. S550 (TCDS A22CE)

## 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.

ST155CH Acron Aviation, Inc.

5353 52nd Street South East Grand Rapids, MI 49512-9704 Part 25 the Federal Aviation Regulations A22CE Textron Aviation Inc.

500, 550, 552, 560, S550 Installation of TCAS791 Traffic Alert and Collision Avoidance System I (TCAS I) installed in accordance with Goodrich Master Drawing List, Drawing No. MDL 550-002, Rev. E, dated April 2, 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, Rev. B, FAA approved May 14, 1998, or later FAA approved revision, is required on board for operation of the modified aircraft.

3. 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.

August 2, 1993 January 14, 1994 May 19, 1998 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 2 March 11, 1994; February 13, 2002;

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

ST155CH 2

## Every issue (2)

- April 1, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/9b/5a/9b5a2eca8be0e0433c236615e13aa0690b7cafc81112b773a63bc12110777fd2)
- December 12, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/08/51/0851e96f7ae57e35efe7ce5082cb40268e460f5535b3a20f798b5afa7121c4be)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.