# STC SA415SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Modification to main landing gear struts to qualify aircraft for 48,000 lbs. landing weight
- Applied: July 22, 1964
- Status date: December 1, 1999
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-772](https://openairdocs.org/tcds/A-772)
- Certificate PDF: https://openairdocs.org/files/sha256/88/56/8856af3a949864e1706f40268a9c0bac24856f9a344f6f9e59021922658b578a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0307BC1D2CA8741285256CC2000E39FF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA415SW

## ADs that name it (0)

None.

## Approved models (1)

- Flying Tiger Line Inc. C-46A ([TCDS A-772](https://openairdocs.org/tcds/A-772))

## 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.

•IHmtzh ^tatea <©f .Ammca ^Dtaium J\0mtmalraium (&erttftcate SA415SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 772 Civil Ai r Flying Tigv Line, Inc. (Curtis-Wright) C-46A Modification to main landing gear struts to qualify aircraft for 48,000 Ibs.

landing weight in accordance with Drawing List SD302000-2B dated 8/20/64.

1. This modification eligible on Curtis-Wright Model C-46A, Serial no. 133, Registration No. N446M only.

2. Structural approval only.

.- July 22, 1964 August 21, 1964 .- December 1, 1999 JSz^fe amena&af.- May 8, 1967 Revision 1 (Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <//> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and <7/> 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/sha256/88/56/8856af3a949864e1706f40268a9c0bac24856f9a344f6f9e59021922658b578a)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.