# STC SA1097NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Dow Aero LLC, United States
- Description: Installation of Winters AirStair at the aft passenger entrance.
- Applied: December 1, 1980
- Status date: March 13, 2025
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/96/e0/96e0c89646a54debd7c831313d0134bbc123d43445b5bb718cc4b0d1c2ee42dc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173565091720250401153945.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1097NW

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 737-200 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## 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.

SA1097NW Dow Aero, LLC 6800 Camille Avenue Oklahoma City, OK 73149 Part 25 the Federal Aviation Regulations A16WE Boeing 737-200 Series The approval of this type design applies basically to the above listed model only. The installer must determine whether this design change is compatible with previously approved modifications.

If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

12/01/1980 11/03/1988 07/16/1997 01/05/2000 10/02/1981 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of Winters airstair at the aft passenger entrance in accordance with Winters' Drawing List Number 1423-3700, Revision "D", dated September 16, 1981, or later FAA approved revision.

FAA 8110-2 ( 10/24) Page 2 of __

SA1097NW 03/13/2025 3

SA1097NW 03/13/2025 Date Reissued:

12/03/2001; 04/28/2008; 12/11/2020; 03/13/2025

-END- 3 3

## Every issue (3)

- March 13, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/96/e0/96e0c89646a54debd7c831313d0134bbc123d43445b5bb718cc4b0d1c2ee42dc)
- December 11, 2020: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ec/9c/ec9c40cd066daada3836d4d5e987f18b7d59a8c9821ddfc8fb9801c027982c01)
- April 28, 2008: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/c1/eb/c1eb9a3ec5a4ec307dd189aa502bc0aaf90cb4aeb0c580678ebea133491be3f2)

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