# STC SA5366SW-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC yaw damper system, Model ST-267.
- Applied: November 2, 1984
- Status date: December 21, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/eb/35/eb35608c4c699b86bf2899238188d9939cf91ba76f8e7886d7c379d64659b9f3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E09F2AA91FFCB49685256CC2001228A8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5366SW-D

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-E23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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.

<_Jp*&4 Hnitri States of amtrica Btpartmcnt of Transportation —federal aviation administration Supplemental l^pe Certificate iSUvmv€vi' SA5366SW-D <• S-TEC Corporation Rt, 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, TX 76067 iat in

LI VI I lAlU PIPER PA^23-250 AND PA.E23-250 —z Installation of S-TEC Yaw Damper System, Model ST-267, according to Bulletin No, 367, dated 10-22-84 and Master Drawing List No. 92301, dated 10-22-84 and/or later FAA Approved revisions of the above data (28 Volt System).

1. Eligible only on Piper Models PA-23-250 and PA-E23-250, S/N 27-2000 through S/N 27-7554172.

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

11-2-84 £Xdmi>ru (Signature) Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW ( 1 "It;

This certificate may bf transferred in accordance with FAR 21.47, . SI 10-2(10-48)

tlnittd £tatt» of amenta Btpartment of Importation— federal a&iation administration upplemental Itpe Certificate(Continuation £heet) SA5366SW-D Limitations and Conditions (con't)

2. Also eligible on the above listed models when equipped with Approved Turbocharged Engines (250 H.P.) and/or Wing Tip Tanks per STC SA1480WE.

3. FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual, P/N 89545, dated 12-21-84 is required and/or later FAA Approved revisions of the above supplement.

4. Compatabil ity of this modification with other previously approved modifications must be determined by the installer.

.!• , i, '• !'!'!•>>'. (,f /his itrtificate is punishable by a fine of not exceeding Si,000, nr impn\unment mil exceeding 3 \etir \, »i ' > . ,-,.-. , t-,RM aiio-2-i (10-69) 'J his certificate may be l'amjnr,d ,n accordance u-ttfi 1 .\K -'/ PAGE 2 OF 2 PAGES

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

Signature of grantor (In ink):

## Every issue (1)

- December 21, 1984: Issued, Current. [certificate](https://openairdocs.org/files/sha256/eb/35/eb35608c4c699b86bf2899238188d9939cf91ba76f8e7886d7c379d64659b9f3)

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