Supplemental type certificate · S-TEC Corporation

Holder
S-TEC Corporation · United States
Status
Current · Amended
Status date
May 11, 2001
Applied
July 24, 1995
Product
Aircraft · Small Multi-Engine
Certification basis
Part 21
Data sheet
TCDS3A25

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation of S-TEC System 55/55X two axis automatic flight guidance system, Model ST-594

What the certificate saysOCR

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: SA09016AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Lost 3 of the Cil st i Kegulations.

Original Product I ype Certificate A umber : ЗА25 Make: Cessna Model: 320B, 320C, 320D, 320E, and 320F Description of Type Design Change:

Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-594, according to Bulletin No. 694, Revision 4, dated 5-11-01 and Master Drawing List No. 92794, Revision D, dated 5-11-01 or later FAA Approved revisions of the above data (28 Volt System).

(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: 7-24-95 Bate wisued:

Date of Issuance: 8-02-95 Date Amended: 5-11-01 By Direction of the Administrator FEDERAL AVIATION тілк (Signature) TOMNISTRATIO 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: SA09016AC-D Limitations and Conditions: (con't.)

FAA/DAS Approved Supplemental Flight Manual, P/N 891181, dated 8-02-95 is required for Cessna Models 320B, 320C, 320D, 320E, and 320F or later FAA Approved revisions of the above supplement.

2. FAA/DAS Approved Supplemental Flight Manual, P/N 891181, Revision 1, dated 5-11-01 is required for Cessna models 320B, 320C, 320D, 320E, and 320F for S-TEC System 55/55X or later FAA Approved revisions of the above supplement.

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

FAA Form 8110-2-1(10-69) Page 2 of 2

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 5

MakeModelData sheet
Cessna Aircraft Company320B3A25
Cessna Aircraft Company320C3A25
Cessna Aircraft Company320D3A25
Cessna Aircraft Company320E3A25
Cessna Aircraft Company320F3A25