STC ST00371DE-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00371DE-D This certificate issued to: Learjet Inc.

1255 E. Aero Park Blvd.

Tucson, Arizona 85706 Part 25* of the Federal Aviation Pegulations.

Plus Special Condition No. 25-143-SC, dated 3-19/99 Original Product Type Berlificate Number: A10CE Make: Learjet Model: 35/35A and 36/36A Description of Type Design Change:

Installation of dual LITEF - Altitude Heading Reference Source (AHRS) system in accordance with Learjet Inc.

Master Document List BAS35010044, revision (-), dated April 28, 1999, FAA approved April 28,1999, or later approved revision.

1. FAA approved Airplane Flight Manual Supplement, BAS35045017, revision (-), dated April 28, 1999, 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.

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

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.

Date of Application: January 7, 1999 Date Reissued: June 13, 2002 Date of Issuance: April 28, 1999 Date Amended:

EDERAL AVIATION By Direction of the Administrator (Signature) MICHAEL L. WILLIAMS TOMNISTRATO (DAS-S-30) DAS ADMINISTRATOR (Title)

IZA Form 0130-2(10-68) This certificate may be transferred in accordance with FAR 31.47.