# STC SA7834SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries Ltd., United States
- Description: Provisions for auxiliary fuel tanks for S/N 18502837 only.
- Applied: January 5, 1988
- Status date: July 31, 2017
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/32/ff/32ff897152001e90f45396a824f5debba0bf13f8cfa380f5dc8ccc1c314bc724
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3F74F5C06AEA2B9386258721004E292B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA7834SW

## ADs that name it (0)

None.

## Approved models (1)

- Textron Aviation Inc. 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.

FAA Form 8110-2 (5/14) Page 1 of 2

Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced.

Number: SA7834SW

Part 3 of the Civil Air Regulations.

Original Product – Type Certificate Number: 3A24 Make: Cessna Model: A185F, S/N 18502837

Provisions for auxiliary fuel tanks in accordance with Sierra Drawing List No. SI 10700, Rev. G, dated 5/11/90, Installation Instructions No. SI 10766, Rev. A, dated 5/11/90, Drawing No. SI 10760, Rev. B, dated 3/19/90, DCN No.

1 dated 4/6/90, DCN No. 2 dated 5/3/90, and DCN No. 3 dated 5/31/90. The new fuel tanks are disconnected according to Report No. SIFTD-1, dated 6/12/90.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to Cessna Model A185F, Serial No. 18502837. The auxiliary fuel tanks will not be connected to the fuel system or used for any purpose without further FAA engineering evaluation.

Date of Application: January 5, 1988 Date Reissued: July 31, 2017 Date of Issuance: June 21, 1990 Date Amended:

Signature

Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd.

122 Howard Langford Drive Uvalde, TX 78801

FAA Form 8110-2 (5/14) Page 2 of 2

Transfer the ownership of Supplemental Type Certificate Number: SA7834SW

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA18NW

FAA Form 8110-2 (5/14) Page 3 of 3

## Every issue (2)

- July 31, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/32/ff/32ff897152001e90f45396a824f5debba0bf13f8cfa380f5dc8ccc1c314bc724)
- June 21, 1990: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/3c/d3/3cd3d0ea4612f3eed5b7d112bf6a482baa179e97727a1faece39366156573692)

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