# STC SA150NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Williams Robert or Barbara, United States
- Description: Installation of flap gap seals.
- Applied: October 24, 1974
- Status date: March 22, 1994
- 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 3A19](https://openairdocs.org/tcds/3A19), [TCDS 3A21](https://openairdocs.org/tcds/3A21), [TCDS 3A24](https://openairdocs.org/tcds/3A24), [TCDS 5A5](https://openairdocs.org/tcds/5A5), [TCDS 5A6](https://openairdocs.org/tcds/5A6), [TCDS A-799](https://openairdocs.org/tcds/A-799)
- Certificate PDF: https://openairdocs.org/files/sha256/0b/f2/0bf2487da025bc172d7a3e02575301d19d55d616eae29fee6d4ea06176c12f96
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/037B86954A8DAE1B86257BB30055B717.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA150NW

## ADs that name it (0)

None.

## Approved models (87, first 50)

- The Cessna Aircraft Company 150 ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150A ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150B ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150C ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150D ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150E ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150F ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150G ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150H ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150J ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150K ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150L ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 150M ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 152 ([TCDS 3A19](https://openairdocs.org/tcds/3A19))
- The Cessna Aircraft Company 170B ([TCDS A-799](https://openairdocs.org/tcds/A-799))
- The Cessna Aircraft Company 172 ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172A ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172B ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172C ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172D ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172E ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172F (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172G ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172H (USAF T-41A) ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172I ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172K ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172L ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172M ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 172P ([TCDS 3A12](https://openairdocs.org/tcds/3A12))
- The Cessna Aircraft Company 175 ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- The Cessna Aircraft Company 175A ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- The Cessna Aircraft Company 175B ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- The Cessna Aircraft Company 175C ([TCDS 3A17](https://openairdocs.org/tcds/3A17))
- The Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180D ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180E ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180F ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180G ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180H ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180K ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 182 ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- The Cessna Aircraft Company 182A ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- The Cessna Aircraft Company 182B ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- The Cessna Aircraft Company 182C ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- The Cessna Aircraft Company 182D ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

All 87: https://openairdocs.org/stc/SA150NW/models.md

## What the certificate says

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

Possession of the Supplemental Type Certificate (STC) does not constitute rights to the installation of the modification or its design data. The STC and related information (drawings, data, specifications) are the property of the STC holder. The Federal Aviation Administration will not release proprietary data without authorization from the holder. The user must get installation approval or data rights from the STC holder.

Halted Scates of Staerica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number: SA150NTN The corteficate, stued lo P.O. Robert, L. or Barbara V. Williams Box 431 Udall, KS 67146 Certifies that the change in the type design for the fallening product with the limitations and conditient therferasspefed hercommut the aironhincurequisment of Sawl 3 the CiViL AiT Regulations Original Product Type Camificate Numbers Make: * * (See Approved Model List No. SA150NW) Model: + Description of Type Design Change:

Installation of Flap Gap Seals with B & M Aviation's Installation dated June 21, 1989, or later approved revision. 1975, Bob or Barbara Williams Installation Instructions BM4, Revision A, Instructions No. BM1, dated September 10, 1974, BM4, dated August 28, Limitations and Conditions:

This approval should not be extended to other specific airplanes of these and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of those airplanes. models on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change Bathgeba:

(Signature) Wichita Aircraft Certification Office Ronald K. Rathgeber, Acting Manager _ (Tile)

FAA Foss 8110-2 (10-68)

4 - ITEM Cessna Cessna Cessna Cessna MAKE AIRCRAFT 172Q 172M, 1721, 1725, 172C, 172, 1803, 180F. 180C. 180, 305F 305А, 305С, 305D, 170B 172N, 172K, 172G, 172D, 172AJ 180K 180G, 180D, 180E, 180A, MODEL AIRCRAFT 172P, 1721, 1728, 172E, 172B, 180H, 1805, ЗА12 5A6 5A5 A-799 NOMBER SERTIFICATE ORIGINAL INSTALLATION OF FLAP GAP SEALS ROBER LO Or BARBARA VO WILLIAMS FAR APPROVED MODEL LIST (AML) NO. SA150NW Page 1 of 3 in the CDS ments listed other amend- 3-12 and 3-1 through amended by 11/1/49 as CAR 3 dated (ICDS) Data Sheet Certificate пуре listed in the amendments 11/1/49 with CAR 3 dated 5A5 Specification Aircraft listed in amendments 11/1/49 with CAR 3 dated 3-1 and 3-2 amended by 11/1/49 CAR 3 dated ALTERATION FOR BASIS SERTETCATION FOR Change hype Design "Description of *See STC SA150NW NUMBER/DATE NUMBER DATE REVISION NO. SUPPLEMENT INSTRUCTIONS AFM INSTALLA LION Issue Date: March 22, 1994

**DATE AMENDMENT AMI**

8- 6- ITEM Cessna Cessna cessna. cessna MAKE AIRCRAFT 210 - 5A 210, A150M, 150L, 150J, 150F. 150C, 150, R172K, 172RG 175C, 175, T182, 1820, 182M, 182J, 182F, 182C, 182, 2100, 210-5, 210A, 152, A152 A150L, 150K, 150G, 150D, 150AJ P172D, 175A, C182R 182R, 182N, 182K, 182G, 182D, 182A, 1828, MODEL AIRCRAFT 150M, A150K, 150H, 150EJ 175B, R182, 182P, 182L/ 182H, 18251 ЗА21 ЗА19 ЗА17 ЗА13 NUMBER CERITFICATE HYPE ORIGINAL INSTALLATION OF FLAP GAP SEALS ROBERT L. Or BARBARA V. WILLIAMS FAA APPROVED MODEL LIST (AML) NO. SALSONN Page 2 of 3 in the TCDS ments listed other amend- 5/15/56 and CAR 3 dated TCDS listed in the amendments 3-4 and other amended by 5/15/56 as eAR 3 dated LCDS listed in the amendments 5/15/56 and CAR 3 dated in the TCDS ments listed other amend- 3-12 and 3-1 through amended by 11/1/49 as •AR 3 dated ALTERATION FOR BASIS CER TETCATION FOR Change" Hype Design Description of *See STC SA150NW NUMBER / DATE NUMBER, DAVIE REVISION NO. SUPPLEMENTE AEM INSTRUCTIONS INSTALLATION Issue Date: March 22, 1994

**DAIS AMENDMENT AML**

SAZ119WE SA1689WE SA1382WE STOL modifications per the following NOTE: ITEM This STC introduces no adverse effect Cessna MAKE AIRCRAFT SA2189WE SA1977WE SA1431NB A1858, A185F 185C7 185, 185Dг 185A, 1858, MODEL AIRCRAFT SA2191WE SA2002WE SA1435WE STCS: 185E, JА24 NOMBER SERITEICATE HYPE ORIGINAL INSALLANION OF FLAP GAP SEALS ROBERT 1. FAR APPROVED MODEL LIST (AMD) NO. SA150NW Page 3 of 3 SA2192WE SA2003WE SA1441WE upon che airwor TCDS Listed in the amenaments and other 3-5 3-1 through amended by 5/15/56 as CAR 3 dated AINVERATTON FOR BASIS CERTIFICATION FOR OF BARBARA VO WIELTANS SA2242WE SA2004WB SA1525WB of aircraft equipped with Robertson 1088 change Design Description of *See STC SA150NW NOMBER REVISION NO. INSTRUCETONS INSTATEALTON DATE NUMBER/ DATE SUPPLEMENT. AFM Lssue Date:

DATE AMENDMENT AML March 22 1994

## Every issue (1)

- March 22, 1994: Amended, Current. [certificate](https://openairdocs.org/files/sha256/0b/f2/0bf2487da025bc172d7a3e02575301d19d55d616eae29fee6d4ea06176c12f96)

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