# STC SA4948NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Spoilers Inc, United States
- Description: Installation of spoilers.
- Applied: May 25, 1990
- Status date: July 9, 2013
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/7e/ee/7eee97a81c0419936db3fbb787c9eab9e74ba59a5960001dde10ce742ac51d24
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0072F12F4C0E019C86257BA50051A7F3.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4948NM

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company 340 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 340A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

## 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.

Number SA4948NM

This certificate, issued to Spoilers, Inc.

1202 26th Avenue NW Gig Harbor, WA 98335 Part 3 of the Civil Air Regulations.

Original ProductType Certificate Number: 3A25 Make: Cessna Model: 340 and 340A

Description of the Type Design Change: Installation of spoilers, in accordance with Spoilers, Inc. Installation Instructions SP8000 and Master Drawing List SP8000, both dated May 30, 1990, or later FAA approved revisions.

Limitations and Conditions : Approval of this change in type design applies to the above model aircraft only. This approval should not be exteded to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate and the FAA Approved Flight Manual Supplement dated June 18, 1990, must be maintained as part of the permanent records for the modfied aircraft.

Date of application: May 25, 1990 Date reissued: July 9, 2013 Date of issuance: June 19, 1990 Date amended:

(Signature) Manager, Seattle Aircraft Certification Office (Title)

## Every issue (2)

- July 9, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7e/ee/7eee97a81c0419936db3fbb787c9eab9e74ba59a5960001dde10ce742ac51d24)
- June 19, 1990: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/12/dd/12dd97ec264ab4902258c029470de0aa62761a181d3fec97918ca4695c9dcfe7)

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