# STC SA933NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Lake Vue Aeronautics, United States
- Description: Installation of a BAS, Inc., or a Blancher Model 101 stowable seat
- Applied: April 15, 1980
- Status date: February 22, 2008
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12), [TCDS 3A13](https://openairdocs.org/tcds/3A13), [TCDS 3A17](https://openairdocs.org/tcds/3A17), [TCDS 3A24](https://openairdocs.org/tcds/3A24), [TCDS 5A6](https://openairdocs.org/tcds/5A6), [TCDS A-799](https://openairdocs.org/tcds/A-799)
- Certificate PDF: https://openairdocs.org/files/sha256/d2/ed/d2ed7adb676aca05a98a76f63d251001106a039c918fe97ea8d5dae050c23a5f
- Approved model list and other attachments: [SA933NW_AML_Amd1.pdf](https://openairdocs.org/files/sha256/a1/b6/a1b666a853a27084f749c84ae8222a599fb4a4bf6a5cc9c7d0bd474648747db4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3142FEAA9183E946862574860072CE5C.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA933NW

## ADs that name it (0)

None.

## Approved models (63, first 50)

- Cessna Aircraft Company 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- Cessna Aircraft Company 170A ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172F ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172H ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172R ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 172S ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- Cessna Aircraft Company 175 ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Cessna Aircraft Company 175A ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Cessna Aircraft Company 175B ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Cessna Aircraft Company 175C ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180D ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180E ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180F ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180G ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180H ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- Cessna Aircraft Company 182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182A ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182B ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182C ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182D ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182E ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182F ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182G ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182H ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182J ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182K ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182L ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182M ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182N ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182P ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

All 63: https://openairdocs.org/stc/SA933NW/models.md

## 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.

This certificate issued to: LakeVue Aeronautics 24982 – 182 nd Street Spirit Lake, Iowa 51360

Part * of the * Regulations.

Original Product - Type Certificate Number : *See attached FAA Approved Model List (AML) No.

Make : SA933NW for a list of approved aircraft models and Model : applicable airworthiness regulations.

Installation of a BAS, Inc., or a Blancher Model 101 stowable seat in accordance with either BAS, Inc. Drawing List No. 1001, Revision B, dated August 13, 1986; or Bud’s Aero Specialities Drawing List Report 1001, dated April 15, 1980; or Long View Aviation Drawing List Report No. 1001, Revision F, dated December 3, 2006; or LakeVue Aeronautics Drawing List, Revision C, dated February 15, 2008; or later FAA approved revision.

Note: These seats serve as replacements for the center seat. Only those Model R172K and 175 series aircraft equipped with FAA approved center seat floor mounted seat belt attach points are eligible for this installation.

The compatibility of this design change with other previously approved modifications must be determined by the installer. A copy of this Certificate and the Airplane Model List (AML) No. SA933NW must be maintained as part of the permanent records of the modified aircraft. If the holder of this STC agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application : April 15, 1980 Date of issuance : May 16, 1980 Date reissued : March 26, 1980; November 23, 2004;

December 21, 2004; May 8, 2007 Date amended : March 26, 1987; December 19, 1991;

November 23, 2004; December 21, 2004; January 11, 2007; October 17, 2007; February 22, 2008 By direction of the Administrator

Original signed by William Schinstock

( Signature) William Schinstock Associate ACO Manager, Airframe & Services Wichita Aircraft Certification Office (Title)

### SA933NW_AML_Amd1.pdf

Issue Date: March 26, 1987 ITEM

**AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION BASIS**

**FOR ALTERATION NUMBER**

REVISION DATE * AFM

**SUPPLEMENT DATE AML**

AMENDMENT DATE 1 Cessna 170; 170A; 170B A-799 CAR 3 dated 12/15/46;

CAR 3 dated 11/01/49 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or NC & A 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 2 Cessna 172; 172A, B,C,

D,E,F,G,H,I,K, L,M,N 3A12 CAR 3 dated 11/01/49 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or B 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 3 Cessna 180; 180A, B,C,

D,E,F,G,H,J,K 5A6 CAR 3 dated 11/01/49 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or B 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 4 Cessna 182; 182A, B,C,

D,E,F,G,H,J,K,

L,M,N,P,Q 3A13 CAR 3 dated 11/01/49 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or B 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 5 Cessna 185; 185A, B,C, D,E 3A24 CAR 3 dated 05/15/56 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or NC & A 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 6 Cessna 175; 175A, B,C;

R172K 3A17 CAR 3 dated 05/15/56 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or B 03/26/87 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07

**INSTALLATION INSTRUCTIONS FAA APPROVED MODEL LIST (AML) NO. SA933NW**

LAKEVUE AERONAUTICS FOR INSTALLATION OF MODEL 101 STOWABLE SEAT * or later FAA approved revisions Page 1 of 2

Issue Date: March 26, 1987 ITEM

**AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION BASIS**

**FOR ALTERATION NUMBER**

REVISION DATE * AFM

**SUPPLEMENT DATE AML**

**AMENDMENT DATE**

**INSTALLATION INSTRUCTIONS FAA APPROVED MODEL LIST (AML) NO. SA933NW**

LAKEVUE AERONAUTICS FOR INSTALLATION OF MODEL 101 STOWABLE SEAT 7 Cessna A185E, F 3A24 CAR 3 dated 05/15/56 Bud's Aero Specialties DL report No. 1001 or BAS, Inc. DL Report No. 1001 or B 12/19/91 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 8 Cessna 172P 3A12 CAR 3 dated 11/01/49 Long View Aviation Drawing List Report No. 1001 or Rev. F dated 12/03/06 01/11/07 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 9 Cessna 172R, S 3A12 FAR 23 dated 02/01/65 Long View Aviation Drawing List Report No. 1001 or Rev. F dated 12/03/06 01/11/07 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 10 Cessna 182R 3A13 CAR 3 dated 11/01/49 Long View Aviation Drawing List Report No. 1001 or Rev. F dated 12/03/06 01/11/07 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 11 Cessna 182S, T 3A13 FAR 23 dated 02/01/65 Long View Aviation Drawing List Report No. 1001 or Rev. F dated 12/03/06 01/11/07 LakeVue Aeronautics Drawing List Rev. C 02/15/08 10/17/07 FAA Approved:

William Schinstock Associate ACO Manager, Airframe & Services Amended: March 26, 1987; December 19, 1991;

December 21, 2004; January 11, 2007;

October 17, 2007; February 22, 2008

Original signed by Schinstock * or later FAA approved revisions Page 2 of 2

## Every issue (4)

- February 22, 2008: Amended, Current. [certificate](https://openairdocs.org/files/sha256/d2/ed/d2ed7adb676aca05a98a76f63d251001106a039c918fe97ea8d5dae050c23a5f), [SA933NW_AML_Amd1.pdf](https://openairdocs.org/files/sha256/a1/b6/a1b666a853a27084f749c84ae8222a599fb4a4bf6a5cc9c7d0bd474648747db4)
- October 17, 2007: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/9f/6f/9f6f2b8d4b329526d91464713bd1fe1da4b9cc8bb570407297ec880e79b982ac), [SA933NW.pdf](https://openairdocs.org/files/sha256/83/b5/83b5c040d267b930e998403a98eb85433d8a1214d91d7d7a8612480d9480357a)
- May 8, 2007: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/99/8f/998fe2527585139ef15c4a2543b4c1437738befacc9ab238890538b21b8a3d8e), [SA933NW.pdf](https://openairdocs.org/files/sha256/78/d1/78d1ad6610a2303f32b49c169d38c9c4b3f5e11e682e69ee47a0eea3f2976c97)
- December 21, 2004: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/28/26/2826967e3f824cd62c00196cbc0ab996f7b3aebe5d81fa9f5ba8b6b1b9315f9a), [SA933NWAML.pdf](https://openairdocs.org/files/sha256/22/c2/22c2c2a3edd3b4ad1a3f44a5e2c1eb9657cfe9c40b70d994f1b5bfe5444de1ab)

---
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.