# STC ST00109DE-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Learjet Inc, United States
- Description: Installation of Allied Signal CAS-66 TCAS I system
- Applied: February 3, 1994
- Status date: May 7, 2002
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE), [TCDS A27CE](https://openairdocs.org/tcds/A27CE)
- Certificate PDF: https://openairdocs.org/files/sha256/d8/80/d88034dd09facc9dc0c005ea33f53281edc2c464ca904c7438a1e638e87d8dbf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/36DBD3972D4D9F4085256CC2006A705B.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST00109DE-D

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company 500 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))
- Cessna Aircraft Company 501 ([TCDS A27CE](https://openairdocs.org/tcds/A27CE))

## What the certificate says

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

United States of America ECOPY Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00109DE-D This certificate issued to:

Learjet Inc.

One Learjet Way Wichita, Kansas 67209 Part 25 of the Federal Aviation Regulations.

Original Product -Type Certificate Number. A22CE Make: Cessna Model: 500 and 501 Description of Type Design Change:

Installation of Allied Signal CAS-66 TCAS I System in accordance with AMR Combs, Inc. Certification Drawing List 7500501, revision N/C, dated June 15, 1994, FAA approved June 17, 1994, or later approved revision.

1. FAA approved Airplane Flight Manual Supplement, CG 00501-01, dated June 17, 1994, or later approved revision is required.

2. This approval should not be extended to aircraft of this model on which previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft.

Date of Application: February 3, 1994 Date Reissued: January 4, 1995 May 7, 2002 Date of Issuance: June 17, 1994 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Da T.

(Signature) David T. Grossman Program Manager TOMINISTRATIO Northwest Mountain Region, Denver, Colorado Denver Aircraft Certification Office.

(Title)

## Every issue (1)

- May 7, 2002: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d8/80/d88034dd09facc9dc0c005ea33f53281edc2c464ca904c7438a1e638e87d8dbf)

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