# STC ST734CH-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Duncan Aviation Inc, United States
- Description: Installation of Universal Navigation corp UNS-1K flight management system, using software (SCN) 602.x.
- Applied: October 2, 1997
- Status date: September 16, 2008
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- Certificate PDF: https://openairdocs.org/files/sha256/3e/63/3e63c97052cc38519e30d25c4959b03a3acb942440ca5d10938dfa4bdd5ac9e7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/51821769104076E18625794F006A5F7F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST734CH-D

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 560 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

## 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.

Part 25 of the Federal Aviation Regulations.

Installation of Universal Navigation Corporation UNS-1K Flight Management System, using software (SCN) 602.x, in accordance with Kal-Aero, Inc. Drawing List KA9710-01R, Revision C, dated February 25, 1998, or later approved revision.

1. FAA approved Airplane Flight Manual S upplement, KA9710-05R, Revision A, FAA approved January 2, 1998, or later approved revision is required.

2. FAA approved Maintenance Flight Manual Supplement, KA9710-06R, Revision , dated November 14, 1997, FAA approved February 19, 1998, or later approved revision is required.

3. Compatibility of this design change w ith previously approved modifications must be determined by the installer.

4. If the Certificate 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.

5. A copy of this Certificate, Maintenance manual Supplement, a nd Flight Manual Supplement must be maintained as part of the permanent records of the modified aircraft.

Duncan Aviation Inc.

3701 Aviation Rd.

Lincoln, NE 68524 A22CE Make : Cessna Model : 560 Date of application : October 2, 1997

Date of issuance : November 18, 1997 Date reissued : March 17, 1998, September 16, 2008

Date amended : January 2, 1998, February 25, 1998

Original signed by Steve Simpson

( Signature) Steven K. Simpson DAS Administrator, DAS-501013-CE Duncan Aviation, Lincoln, Nebraska

( Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee) (Number and street)

(City, State, and ZIP code)

from (Name of grantor) (Print or type)

(Address of grantor) (Number and street}

(City, State, and ZIP code)

Signature of grantor (In ink)

## Every issue (1)

- September 16, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/3e/63/3e63c97052cc38519e30d25c4959b03a3acb942440ca5d10938dfa4bdd5ac9e7)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.