# STC SA2830SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Installation of ONTRAC III VLF Navigation System for enroute IFR
- Applied: August 9, 1977
- Status date: December 1, 1999
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/0b/b0/0bb079a770cce34aa548e2ddeadd17bc39278c70c86cd72d698015f3f1948289
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5B666A90CE79513185256CC20008C9C1.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2830SW

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-9-15 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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.

^Stales 09f .JWrtra lepartmcni nf "Qli-ansportattan - ^efceral JMitalinn jAfrmmistration (Eerttftcate SA2830SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 /riff& tjifM ffye-ttffvaiefi&. a A6WE ...

McDonnell Douglas Co.

DC- 9- 15 4 b o&f, C i VI 1 Ai r Installation of ONTRAC III VLF Navigation System for enroute IFR according to Dee Howard Company Report No. 0009-4, Rev. A dated October 6, 1977.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation roade in McDonnell Douglas Model DC-9-15, Serial No. 45721, only.

FAA Approved Airplane Flight Manual Supplement dated August 8, 1978, is required.

\ • .-August 09, 1977 August 08, 1978 .- December 1, 1999

•38ft (Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region Any alteration of tfria cerCJflcjt* Is punishable by a fine a/ not exceeding $1,000. or ijuprljonweirt not exceeding 3 ytars. Or j FAA Forn 8110-2(10-66) Paga 1 of 2 Thlj certifJcat* may bB tratisferred in accordance with FM 21.47.

The FAA will reiaaua tha certificate in the name of the transferee and forward it to him.

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

Signature of grantor (In ink):

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0b/b0/0bb079a770cce34aa548e2ddeadd17bc39278c70c86cd72d698015f3f1948289)

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