# STC SA27NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: USDA, United States
- Description: Installation of auxiliary crew seat
- Applied: January 15, 1973
- Status date: February 6, 1973
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A13](https://openairdocs.org/tcds/3A13)
- Certificate PDF: https://openairdocs.org/files/sha256/79/3e/793e19c9336635f9ee456ef049bc9ed581f569c3bbe01aab71e6a0cbf568fa9e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/667B94FCD73F9F3385256CC20008C95A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA27NW

## ADs that name it (0)

None.

## Approved models (11)

- Cessna Aircraft Company 182D ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182E ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182F ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182G ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182H ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182J ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182K ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182L ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182M ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182N ([TCDS 3A13](https://openairdocs.org/tcds/3A13))
- Cessna Aircraft Company 182P ([TCDS 3A13](https://openairdocs.org/tcds/3A13))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA27IN This certificate issued to: U.S. DEPARTMENT OF AGRICULTURE (USDA) Part 3 of the Federal Aviation Regulalins, dated 1 November 1949 as amended by 3-1 through 3-12.

Original Product - Type bertificate Number: 3A13 Make: Cessna Model: 182D through P Description of Type Design Change:

Installation of Auxiliary crew seat in accordence with USDA Dvg. No. 72-3-Y in the rear seat area of the specified Cessna series aircraft.

Limitatuns andbunditins: Crewman must face forward for all take-offs and landings when using auxiliary crew seat.

Date of Application: 15 January 1973 Tute missued:

Date of Issuance: . 6 February 1973 Date Amended:

FEDERAL AVIATION (Sigmatine) OMINISTRATO Chief, Engineering and Manufacturing Branch (Title)

FAA Fosh 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA275 Supplemental Type Certificate HOLDER:

U.S. DEPARIMENT OF AGRICULTURE (USDA) Agriculture Research Service 3706 West Knob Hill Blav.

Yakima, Washington 98902 Model 182D Through P Cessna as modified by this STC, APPROVED 6 February 1912.

Sane as basic configuration except for installation of required equipment and placards as follows:

REQUIRED EQUIPMENT: In addition to the equipment applicable as required by Aircraft Specification No. 3A13, the equipment specified by USDA Drawing No. 72-3-Y, installation must be installed as a result of the incorporation of this SIC.

REQUIRED PLACARDS: The following must be displayed in full view of the pilot:

1. "VNE WITH DESPENSER INSTALLED 150 MPH (IAS)."

**2. CREW MUST FACE FORWARD AND USE SEAT BELTS ON TAKE-OFF AND LANDING.**

**3. DO NOT USE AIRCRAFT RADIO OR NOW - ESSENTIAL**

ELECTRICAL EQUIPMENT WHEN DISPENSER IS BEING OPERATED."

4. "PASSENGERS OTHER THAN CREW PROHIBITED."

5. AIRCRAFT MAY BE OPERATED IN NORMAL OR RESTRICTED CATEGORY WITH AUXILIARY CREW SEAT."

NOTE 1: Current Weight and Balance Report including list of equipment included in the certificated empty weight and loading instructions must be in the aircraft.

**47 PAGE OF 4 PAGES**

## Every issue (1)

- February 6, 1973: Issued, Current. [certificate](https://openairdocs.org/files/sha256/79/3e/793e19c9336635f9ee456ef049bc9ed581f569c3bbe01aab71e6a0cbf568fa9e)

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