# STC SA4010SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Installation of Subfloor seat mounting structure
- Applied: January 11, 1979
- Status date: December 1, 1999
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A21](https://openairdocs.org/tcds/4A21)
- Certificate PDF: https://openairdocs.org/files/sha256/d4/84/d48422c12c4380b19063dcce7f9ca4c29be45a19dca749af18b2a4ac0c04d991
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A716E1DB74491F5285256CC2000C601E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4010SW

## ADs that name it (0)

None.

## Approved models (4)

- The Boeing Company 707-100 Long Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707-100B Long Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707-100B Short Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21))
- The Boeing Company 707-200 ([TCDS 4A21](https://openairdocs.org/tcds/4A21))

## 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.

es ©f ,Ainmca at Wranapnrtaturn - ,3fi»0mtl ^talron ^mtmsiraltmt Certificate SA4010SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 4b Civil Air Boeing (See Limitations and Conditions) Installation of subfloor seat mounting structure in accordance with Drawing T-020-101, Revision D, dated 4/8/79, or later FAA approved revision.

Eligible on Boeing Model 707 Series which have 10", 18", or 20" frame spacing.

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

tit- .- January 11, 1979 July 06, 1979 '.• December 1, 1999 (Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region A/iy alteration of this certificate is punishable by a fine of not exceeding $J,000, or ijnprisonment not exceeding 3 years, or jboth.

INSTRUCTIONS: The transfer cndorsemenl below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate.

The FAA will reissue the 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 code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ^_1P 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/d4/84/d48422c12c4380b19063dcce7f9ca4c29be45a19dca749af18b2a4ac0c04d991)

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