# STC SA1790CE-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc, United States
- Description: Installation of King KNS 660 multi-sensor flight management system.
- Applied: November 26, 1984
- Status date: March 26, 2020
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A23SO](https://openairdocs.org/tcds/A23SO)
- Certificate PDF: https://openairdocs.org/files/sha256/81/9b/819bc7f472f18ce20b3a0d480142417aec08a5325ce98865e77ce7cdd740f718
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/011A3E809796C418862586170055C4D5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1790CE-D

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-42-1000 ([TCDS A23SO](https://openairdocs.org/tcds/A23SO))

## 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 Number: SA1790CE-D This certificate issued to: Honeywell International Inc.

21111 N 19th Ave Phoenix, Arizona 85027 Part 23 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: Make: Piper A23SO Model: PA-42-1000 Description of Type Design Change:

Installation of King KNS 660 Multi-Sensor Flight Management System.

REQUIRED DATA: 1. King Master Drawing List 155-9324-00 dated 12-3-84 and 2. Airplane Flight Manual Supplement 006-0440-00 dated 1-12-85 or later FAA approved revision to 1 or 2.

KNS 660 Pilot's Guide No. 006-8394-00 dated 11-15-84 or later re vision is required. This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

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.

Date of Application: 11-26-84 Date Reissued: 2-28-95; 2-28-00; 3-26-20 Date of Issuance: 1-12-85 Date Amended:

By Direction of the Administrator Signature Richard B. Sleigh Title ODA Administrator, ODA-602216-NM

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

To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

## Every issue (2)

- March 26, 2020: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/81/9b/819bc7f472f18ce20b3a0d480142417aec08a5325ce98865e77ce7cdd740f718)
- February 28, 2000: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/81/20/81207997a8d3e05758fa0d598edcdea3faeb35e8755a38da6ca497b672d34142)

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