# STC SA3840NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Flight Structures Inc., United States
- Description: Interior reconfiguration to 166 passenger seating arrangement
- Applied: March 3, 1985
- Status date: June 8, 1987
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26)
- Certificate PDF: https://openairdocs.org/files/sha256/dc/a4/dca41ed145a025940d593828cc3bc0680ef2cfedc9ddbebd1f23e6ccbf15bd94
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/63AE130E1891BF9C86257A090055C492.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3840NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 707-300B Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3840NSS This certificate issued to: Flight Structures, Inc.

Purt 4b of the CIViI Air Segulations:

Original Product -Type Perificate Number: 4A26 Make: Boeing Model: 707-300B Lescriplin/TypeTeyn Change: Interior reconfiguration to 166 passenger seating arrangement in accordance with Flight Structures Drawing No. 86FS00801 Revision D dated June 5, 1987 or later FAA approved revisions.

timilalunandCundituns: This approval for change in type design applies to the above model aircraft only. This STC requires prior incorporation of STC No. SA3839NM. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate along with FAA approved Drawing No. 86FS00801 shall be mainteined as part of the permanent records for the modified aircraft.

000, or imp heront tol eace ding 5 pers, in Such This teDiate mo be that feel in are da m 42 1 47.

FAR Porn E110-2/10-69:

## Every issue (1)

- June 8, 1987: Issued, Current. [certificate](https://openairdocs.org/files/sha256/dc/a4/dca41ed145a025940d593828cc3bc0680ef2cfedc9ddbebd1f23e6ccbf15bd94)

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