# STC SA09512AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 55X Two Axis Automatic Flight Guidance System, Model ST-890
- Applied: August 17, 2001
- Status date: August 22, 2001
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A23](https://openairdocs.org/tcds/3A23)
- Certificate PDF: https://openairdocs.org/files/sha256/e7/ad/e7ad5b01da04a8713516cc5a300db08a94a6005c41f1e69d4ff1226995378b14
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B111317051E392FA85256CC1007F3B33.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09512AC-D

## ADs that name it (0)

None.

## Approved models (1)

- Maule Aerospace Technology Inc. M-7-420AC ([TCDS 3A23](https://openairdocs.org/tcds/3A23))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAO9512AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 I ast 3 of the Cirit An Regulations.

Original Product I ype Certifcate Number: ЗА23 Make: Maule Model: M-7-420AC Description of Type Design Change:

Installation of S-TEC System 55X Two Axis Automatic Flight Guidance System, Model ST-890, according to Bulletin No. 990, dated 8-17-01 and Master Drawing List No. 921203, dated 8-17-01 or later FAA Approved revisions of the above data (28 Volt System).

1. Eligibility limited to airplanes equipped with Wipline Model 3000 amphibious floats installed in accordance with Maule Drawing 9203A.

(See Continuation Sheet, Page 2, a part of this STC.)

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 of Application: 8-17-01 Date wisued:

Date of Issuance: 8-22-01 Date Amended:

By Direction of the Administrator FEDERAL AVIA TON Tall K (Signature) TOMNISTRATIOF Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09512AC-D Limitations and Conditions: (con't.)

2. FAA/DAS Approved Pilot's Operating Handbook and/or Flight Manual Supplement, P/N 892087S, dated 8-22-01 is required for Maule model M-7-420AC when equipped with Wipline Model 3000 amphibious floats installed in accordance with Maule Drawing 9203A or later FAA Approved revisions of the above supplement.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

shable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both of 2

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and 2IP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) ( City, State, and ZIP cade) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

## Every issue (1)

- August 22, 2001: Issued, Current. [certificate](https://openairdocs.org/files/sha256/e7/ad/e7ad5b01da04a8713516cc5a300db08a94a6005c41f1e69d4ff1226995378b14)

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