STC SA4092NM

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA4092NM This certificate issued to: Learjet Inc.

One Learjet Way Wichita, KS 67209 Part 25 of the Federal Aviation Poegulations.

Original Product -Type Certificate Number: A13NM Make: de Havilland Model: DHC-8-102, -103 Description of Type Design Change:

Installation of Honeywell Mode S Transponder in accordance with AMR Combs, Inc. Drawing No. 1703007, revision N/C, FAA approved October 23, 1990, or later approved revision.

1. STC SA4593NM-D for the installation of provisions is required.

2. Approval of this change in type design applies to the above model only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship 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.

3. 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.

4. A copy of this Certificate, dated 10/23/90 or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft.

Date of Application: August 31, 1990 Date Reissued: January 4, 1995, March 7, 2002 Date of Issuance: October 23, 1990 Date Amended: September 29, 1998 FEDERAL AVIATION By Direction of the Administrator Dau David T. Grossman (Signature) Acting Manager TOMINIST RATIO Denver Aircraft Certification Office. Northwest Mountain Region, Denver, Colorado (Title)