# STC SA8139SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: New Systems, United States
- Description: Installation of single Mode S transponders with Bendix TCAS-II collision avoidance system.
- Applied: June 6, 1991
- Status date: March 21, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20EA](https://openairdocs.org/tcds/A20EA)
- Certificate PDF: https://openairdocs.org/files/sha256/87/21/8721f37cf6b39906bfc098a7fa0d0a4b17ac854662f16e42d7c3b5c8ec3b4303
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F5F09C606EBB5B9C85256CC20058E616.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA8139SW

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier-Rotax GmbH DHC-7-100 ([TCDS A20EA](https://openairdocs.org/tcds/A20EA))

## 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.

t* fl@f America of "^transportation - JJfeoeral jAntatton JVimttmBtratum (Eerltf tcgie SA8139SW New Systems 1201 North Industrial Blvd.

Round Rock, TX 78681 6&fv^v aJ. tyi&cy&M^j&wcsisnee&. £& a&wo+il&n&U.*effte£<emen&, c^&zstt 2.^> c^/tfe Federal Aviation A20EA DeHavilland DHC-7-100 Installation of single Mode S Transponders with Bendix TCAS-II Collision Avoidance System in Dehavilland DHC-7-100 aircraft in accordance with New Systems, drawing list 102005-0100, Rev C, dated September 10, 1991, or later FAA approved revision.

FAA approved Flight Manual Supplement dated December 6, 1991, or later FAA approved revision is required. Compatibility of this modification with previously installed equipment must be determined by installer.

.- June 06, 1991 December 06, 1991 .• 3/21/97 ~^ ' *?-^ (Signature) \ .J. Merrill Manager, Special Certification Office Southwest Region ___

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) ( Number and ttrtct) (City, Slate, and £1P code) from (Name of grantor) (Print or type).

(Address of grantor) (.Witnikfr and street) I ('.lit. Slate, and ^IP code I Extent of Authority (if licensing agreement): _ Date of Transfer:

Signature of grantor (In ink):

## Every issue (1)

- March 21, 1997: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/87/21/8721f37cf6b39906bfc098a7fa0d0a4b17ac854662f16e42d7c3b5c8ec3b4303)

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