# STC ST741CH-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Duncan Aviation Inc, United States
- Description: Installation of a dual UNS-1C flight management systems.
- Applied: November 11, 2002
- Status date: September 25, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A50NM](https://openairdocs.org/tcds/A50NM)
- Certificate PDF: https://openairdocs.org/files/sha256/83/aa/83aacf35d266064f9dddf51cedf4f8f7183dd396627807ef75dc4b7933312f7d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C2023E5A9B802B98625794F006E7C98.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST741CH-D

## ADs that name it (0)

None.

## Approved models (1)

- Dassault Aviation FALCON 2000 ([TCDS A50NM](https://openairdocs.org/tcds/A50NM))

## 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. See Type Certificate Data Sheet No. A50NM for Complete Certification Basis.

Original Product--Type Certificate Number

Upgrade of the existing dual UNS-1C Flight Management Systems from software version (SCN) 601.x to (SCN) 603.x and GPS software (SCN) 10.x for use as Primary Means Navigation, Oceanic and Remote areas, in accordance with Kal-Aero Master Drawing List KA9804-14R, Revision , dated April 9, 1998, or later FAA approved revision.

1. FAA approved Airplane Flight Manual Supplement, KA9804-13R, Revision , dated April 16, 1998, FAA approved May 15, 1998, or later FAA approved revision is required.

2. A copy of this Certificate and Flight Manual Supplement must be maintained as part of the permanent records of the modified aircraft.

3. Compatibility of this design change with previously appr oved modifications must be determined by the installer.

4. 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.

Duncan Aviation 3701 Aviation Rd.

Lincoln, NE 68524 A50NM Make : Dassault Aviation Model : Falcon 2000 Date of application : April 16, 1998

Date of issuance : May 15, 1998 Date reissued : October 23, 2002, November 11, 2002 September 25, 2008 Date amended :

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 25, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/83/aa/83aacf35d266064f9dddf51cedf4f8f7183dd396627807ef75dc4b7933312f7d)

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