# STC SA5171SW-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 40/50 single and two axis automatic flight guidance systems Model ST-173-40/50.
- Applied: June 16, 1983
- Status date: January 16, 2002
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15)
- Certificate PDF: https://openairdocs.org/files/sha256/d3/d8/d3d80f7edd951357339efe6e2fac04084f3315eb40a5d21d9aab977e0f5eb39d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/79CE703D6FEC80B385256CC200122736.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5171SW-D

## ADs that name it (0)

None.

## Approved models (4)

- Beechcraft Corporation A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation A36TC ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation B36TC ([TCDS 3A15](https://openairdocs.org/tcds/3A15))
- Beechcraft Corporation F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15))

## 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 SASI7ISW-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Civil It in Regulations.

Original Product I ype Certificate Number: ЗА15 Make: Beech Model: F33A, A36, A36TC, and B36TC Description of Type Design Change:

Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-173-40/50, according to Bulletin No. 273, Revision 7, dated 1-11-02 and Master Drawing List No.

92201, Revision G, dated 1-11-02 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: 6-16-83 Date Reissued:

Date of Issuance: 6-28-83 Date Amended: 4-20-84, 1-16-02 By Direction of the Administrator FEDERAL AVIATION (Signature) TOMNISTRATO Michael Keiran DAS Staff Coordinator, DAS S SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAS171SW.D Limitations and Conditions: (con't.)

Also eligible on models F33A, A36, and A36TC when modified per STC SA153EA (tip tanks).

2. Also eligible on model A36 when modified per STC SA5223NM (turbo-normalizing system).

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89213, dated 6-28-83 is required for S-TEC System 40 or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89214, dated 6-28-83 is required for S-TEC System 50 or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89213-1, dated 4-20-84 is required for S-TEC System 40 for Beech Models F33A, A36, S/N E-2110 & below (Except for S/N E-1946 & S/N E-2104) and A36TC or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89394, dated 4-20-84 is required for S-TEC System 40 for Beech Models A36, S/N E-1946, S/N E-2104 & S/N E-2111 & Up or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89395, dated 4-20-84 is required for S-TEC System 40, for Beech Models B36TС, S/N EA-320 & EA-389 & Up or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89445, dated 4-20-84 is required for S-TEC System 40, for Beech Models B36TC, S/N EA-242, S/N EA-273 through S/N EA-388, Except S/N EA-320 or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89214-1, dated 4-20-84 is required for S-TEC System 50 for Beech Models F33A, A36, S/N E-2110 & Below (Except for S/N E-1946 & S/N E-2104) and A36TС or later FAA Approved revisions of the above supplement.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89396, dated 4-20-84 is required for S-TEC System 50 for Beech Model A36 S/N E-1946 S/N E-2104 & S/N E-2111 & Up or later FAA Approved revisions of the above supplement.

ı1. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89391, dated 4-20-84 is required for S-TEC System 50 for Beech Model B36TC S/N EA-320 & EA-389 & Up, or later FAA Approved revisions of the above supplement.

FAA Form B110-2 (10-68) Page 2 of 4

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5171SW-D Limitations and Conditions: (con't.)

12. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89446, dated 4-20-84 is required for S-TEC System 50 for Beech Model B36TC, S/N EA-242, S/N EA-273 through S/N EA-388, Except S/N EA-320 or later FAA Approved revisions of the above supplement.

13. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89213, Revision 2, dated 1-16-02 is required for 1. Beech models F33A; A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104) and A36TC and the above models when modified per STC SA153EA (tip tanks); 2. Beech model A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104) when modified per STC SA5223NM (turbo-normalizing system) for S-TEC System 40 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89394, Revision 1, dated 1-16-02 is required for Beech model A36, S/N E-1946 and S/N E-2104 and S/N E-2111 and up and the above model when modified per STC SA153EA (tip tanks) and/or STC SA5223NM (turbo-normalizing system) for S-TEC System 40 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89395, Revision 1, dated 1-16-02 is required for Beech model B36TC, S/N EA-320 and EA-389 and up for S-TEC System 40 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89445, Revision 1, dated 1-16-02 is required for Beech model B36TC, S/N EA-242, S/N EA-273 through S/N EA-388, except S/N EA-320 for S-TEC System 40 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89214, Revision 2, dated 1-16-02 is required for 1. Beech models F33A; A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104) and A36TC and the above models when modified per STC SA153EA (tip tanks); 2. Beech model A36, S/N E-2110 and below (except S/N E-1946 and S/N E-2104) when modified per STC SA5223NM (turbo-normalizing system) for S-TEC System 50 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89396, Revision 1, dated 1-16-02 is required for Beech model A36, S/N E-1946 and S/N E-2104 and S/N E-2111 and up and the above model when modified per STC SA153EA (tip tanks) and /or STC SA5223NM (turbo-normalizing system) for S-TEC System 50 or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89397, Revision 1, dated 1-16-02 is required for Beech model B36TC, S/N EA-320 and EA-389 and up for S-TEC System 50 or later FAA Approved revisions of the above supplement.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAS17ISW-D Limitations and Conditions: (con't.)

21. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual, P/N 89446, Revision 1, dated 1-16-02 is required for Beech model B36TC, S/N EA-242, S/N EA-273 through S/N EA-388, except S/N EA-320 for S-TEC System 50 or later FAA Approved revisions of the above supplement.

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

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

Date of Transfer: _ Signature of grantor (In ink):.

U.S. GOVERNMENT PRINTING OFFICE : 1966 OF -20S-37:

## Every issue (1)

- January 16, 2002: Amended, Current. [certificate](https://openairdocs.org/files/sha256/d3/d8/d3d80f7edd951357339efe6e2fac04084f3315eb40a5d21d9aab977e0f5eb39d)

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