# STC SA01251WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Duncan Aviation Inc, United States
- Description: Installation of replacement foam seat cushions for cabin seat locations in the Cessna Model 525 Aircraft.  The data required is provided in Document List No. 10058300, Rev. A, dated May 28, 2004 or later FAA approved revision.
- Applied: September 30, 2002
- Status date: June 3, 2004
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- Certificate PDF: https://openairdocs.org/files/sha256/1a/48/1a484c8e5bfeb28e6f0871bf33d2dfdd7c95e72829abb394748696981a2301e3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6E4673794A5FA19E86256F09005133D2.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01251WI

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 525 ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))

## 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.

3701 Aviation Road Lincoln, NE 68524

Part 23 of the Federal Aviation Regulations.

Original Product--Type Certificate Number : A1WI Make : Cessna Model : 525

Description of Type Design Change: Installation of replacement foam seat cushions for cabin seat locations in the Cessna Model 525 Aircraft. The data required is provided in Document List No. 10058300, Rev. A, dated May 28, 2004 or later FAA approved revision.

Limitations and Conditions : Compatibility of this design change with previously approved modifications must be determined by the installer.

If the holder 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 : September 30, 2002

Date of issuance : June 3, 2004 Date reissued :

Original signed by: Harvey E. Nero

( Signature) Harvey E. Nero Program Manager Wichita Aircraft Certification Office

(Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

Number SA01251WI

* Certification Basis: With respect to the modifications of this STC, the Duncan Aviation, Inc. has complied with the following Sections of 14 CFR Part 23, effective February 1, 1965, as amended by the Amendments noted:

14 CFR Part Amendment 14 CFR Part Amendment

23.23(a)(b) 23-45 23.605(a) 23-23

23.301(a-d) 23-48 23.609(a) 23--

23.303 23- 23.611 23-45

23.305(a)(b) 23-45 23.613(a-c) 23-45

23.307(a) 23- 23.785(a, b) 23-49

23.561(a-d) 23-48 23.815(a, b) 23-46

23.562(a, c(7)) 23-50 23.1301(a-d) 23-20

23.603(a, b) 23-23 23.1519(a, b) 23--

## Every issue (1)

- June 3, 2004: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1a/48/1a484c8e5bfeb28e6f0871bf33d2dfdd7c95e72829abb394748696981a2301e3)

---
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.