# STC SA4725SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ontic Engineering and Manufacturing Inc., United States
- Description: Installation of Conrac stall warning and stall avoidance system.
- Applied: May 21, 1982
- Status date: March 17, 2022
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A5SW](https://openairdocs.org/tcds/A5SW), [TCDS A8SW](https://openairdocs.org/tcds/A8SW)
- Certificate PDF: https://openairdocs.org/files/sha256/81/a3/81a39448a521a56d9b1d1d823e44e3896cb1a16c6b63afdfc74db307e00adda4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8044B96A5D6764F78625882B00559C31.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4725SW

## ADs that name it (1)

- [AD 85-22-06 R1](https://openairdocs.org/ad/85-22-06-R1): Stall Avoidance System (SAS) · M7 Aerospace SA226-AT, SA226-T, SA226-TC and 4 more. Effective Oct 19, 1990. Cited in the text

## Approved models (3)

- M7 Aerospace LLC SA226-AT ([TCDS A5SW](https://openairdocs.org/tcds/A5SW))
- M7 Aerospace LLC SA226-T ([TCDS A5SW](https://openairdocs.org/tcds/A5SW))
- M7 Aerospace LLC SA226-TC ([TCDS A8SW](https://openairdocs.org/tcds/A8SW))

## 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.

SA4725SW Ontic Engineering and Manufacturing, Inc.

1176 Telecom Drive Creedmoor, NC 27522 Part 3 the Civil Air Regulations A8SW, A5SW Fairchild SA226TC, SA226AT, SA226T Installation of Conrac Stall Warning and Stall Aviodance System in Fairchild Models SA226TC and SA226AT in accordance with Fairchild Drawing List 27-13981, Revision C, dated 7/21/87; installation in Fairchild Model SA226T in accordance with Drawing List AEC 84-200, Revision A, dated 1/30/86, or later FAA approved revision.

(See continuation sheet 3 of 3) May 21, 1982 February 22, 1983; September 10, 1986;

November 17, 1986; August 23, 2002; June 6, 2003;

April 26, 2012; March 17, 2022 July 20, 1982 December 8, 1982; March 30, 1983; February 19, 1986;

August 3, 1987 Rev 4 S. Frances Cox Acting Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service 3

SA4725SW 3

SA4725SW Date of Issuance: July 20, 1982 Date Amended: August 3, 1987 Date of Reissuance: December 17, 2021

The following FAA approved Airplane Flight Manual Supplements are required:

1. Supplement dated July 20, 1982, for Model SA226TC;

2. Supplement dated December 8, 1982, for Model SA226AT;

3. Supplement dated February 19, 1986, for Model SA226T.

The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

-END- 3 3

## Every issue (2)

- March 17, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/81/a3/81a39448a521a56d9b1d1d823e44e3896cb1a16c6b63afdfc74db307e00adda4)
- April 26, 2012: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f6/f6/f6f6e441931679e15ddad73a31b9349b3519fec8df538aa35b3b79a2fdba65fc)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.