STC ST00042DE-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00042DE-D This certificate issued to:

Learjet Inc.

One Learjet Way Wichita, Kansas 67209 Part 23 of the Federal Aviation Regulations.

Original Product --Type Certificate Number: A24CE Make: Beech Aircraft Model: 1900C Description of Type Design Change:

Installation of Allied Signal TCAS I in accordance with Learjet Inc., Certification Drawing List 7500702, revision B, dated April 27, 1995, FAA approved April 27, 1995 or later approved revision.

1." FAA approved Airplane Flight Manual Supplement 00702-001, revision N/C, dated 4/27/95, or later FAA approved revision is required.

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

Date of Application: June 16, 1993 Date Reissued: January 4, 1995 May 7, 2002 Date of Issuance: June 25, 1993 Date Amended: April 27, 1995 FEDERAL AVIATION By Direction of the Administrator Das T. Caras (Signature) David T. Grossman Program Manager TOMINSTRATO Denver Aircraft Certification Office. Northwest Mountain Region, Denver, Colorado (Title)