# STC SA988NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: AAR Oklahoma Inc, United States
- Description: Installation of Model AS-1350 Advanced Absorber Doppler Antenna and Radome
- Applied: May 21, 1980
- Status date: July 22, 1988
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A25CE](https://openairdocs.org/tcds/A25CE)
- Certificate PDF: https://openairdocs.org/files/sha256/67/48/6748815f9df0df6898e04544f5ad3191ff4e9bb85b62333891b458f58606d95e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7D8070ACD8AA58A986257A08004B0FE4.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA988NW

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 404 ([TCDS A25CE](https://openairdocs.org/tcds/A25CE))

## 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 SA988NW This certificate issued to: AAR Oklahoma, InC.

Purt 23 if the Federal Aviation Regulations Original Product - Type bertificate Number: A25 CL Make: Cessna Model: 404 Description of Type Design Change: . Installation of Model AS-1350 Advanced Absorber Doppler Antenna and Radome in accordance with Advanced Absorber Products Drawing 1039-0001.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Cessna model 404 aircraft, Serial Number 404-0627 only. A copy of this Certificate, Addendum No. SA988NW, and FAA Approved Flight Manual Supplement shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: May 21, 1980 Date Reissued: July 22, 1988 Dalesfisuance: JULY 15, 1980 Date Amended:

FEDERAL AVIATION By Direction of the Administrator .

sanid gstmiel (Sighature ) TAIN STRATOR Manager, Seattle Aircraft Modification Branch (Title )

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number 51930NH Supplemental Type Certificate ADDENDUM NO. SA988NW The conditions and limitations of Type Certificate Data Sheet No. A25CE apply except where superseded by the following:

Supplemental Type Certificate Addendum, which is part of STC SA988NW, prescribes the conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Federal Aviation Regulations. A copy of this STC Addendum is required to be maintained as part of the permanent records for the modified aircraft.

Supplemental Type Certificate HOLDER: AAR Oklahoma, Inc.

CESSNA MODEL 404 (RESTRICTED CATEGORY) AS MODIFIED BY STC SA988NW All items of Data Sheet A25CE apply except:

Vmc - 82 KIAS (at 8400 1bs. with a C.G. of 172.65) NOTE: Restricted Category approval for the Special Purposes of Aerial survey (photography, mapping, oil and mineral exploration).

- END -

**FAA FORM 5110-2-1 (10-69) PAGE 3 OF 3 PAGES**

## Every issue (1)

- July 22, 1988: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/67/48/6748815f9df0df6898e04544f5ad3191ff4e9bb85b62333891b458f58606d95e)

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