# STC SA5908NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aerocet Inc, United States
- Description: Installation of Model 3500 seaplane floats.
- Applied: November 7, 1991
- Status date: April 1, 2002
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/7b/76/7b764beb2d0369bd27096d5ec460b9efe65806a1ec8e593a3a28c56dfb4af91b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9C7084FDFCF7AE8D862579B8007B5181.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA5908NM

## ADs that name it (0)

None.

## Approved models (8)

- The Cessna Aircraft Company 185 ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company 185A ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company 185B ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company 185C ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company 185D ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company 185E ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company A185E ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## 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.

United States of America Department of Transportation_Federal Aviation Administration Supplemental Type Certificate Number SA5908NM This certificate, issued to Aerocet, Inc.

P.O. Box 2119 Priest River, ID 83856 Part 3 of the Civil Air Regulations.

Original ProductType Certificate Number: 3A24 Make: Cessna Model: 185, A85A/B/C/D/E, A185E, and A185F

Description of the Type Design Change: Installation of Aerocet Model 3500 or 3500L seaplane floats in accordance with Aerocet Master Drawing List No. 35-10006, Revision B, dated June 21, 1994, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only, which meet the seaplane eligibility requirements defined on page 3 of this STC. The modified airplane must be operated in accordance with the FAA approved Airplane Flight Manual Supplement, dated March 15, 1995, or later FAA approved revisions. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer 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.

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.

(See Continuation Page 3)

Date of application: November 7, 1991 Date reissued:

Date of issuance: January 4, 1993 Date amended: 1/13/93; 3/15/95; 4/1/02

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)

Number SA5908NM Aerocet, Inc.

Reissued:

Amended: 1/13/93; 3/15/95; 4/1/02

A copy of this Certificate, Continuation Sheet No. SA5908NM, and the FAA approved Airplane Flight Manual Supplement must be maintained as part of the permanent records for the modified aircraft.

AIRPLANE ELIGIBILITY REQUIRMENETS:

- The airplane must incorporate the Cessna approved seaplane kit referred to in Section 7 of the Aerocet Airplane Flight Manual Supplement.

- The airplane must be equipped with the Cessna rudder centering device/non-linear rudder centering spring system defined on Aerocet Drawing No. 35-10000, Sheet 5 of 5.

NOTE: See Aerocet Drawing No. 35-10008 for a listing of those EDO seaplane mounting parts which may be substituted for their respective Aerocet equivalent parts for use in mounting the Aerocet Model 3500 or 3500L Seaplane Floats to the Cessna 185 airplanes.

-END-

**FAA FORM 8110-2- 1 (10-69) PAGE 3 OF 3 PAGES**

## Every issue (1)

- April 1, 2002: Amended, Current. [certificate](https://openairdocs.org/files/sha256/7b/76/7b764beb2d0369bd27096d5ec460b9efe65806a1ec8e593a3a28c56dfb4af91b)

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