STC SA8131NM-D

FAA FORM 8110-2(10-68) Number SA8131NM-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 : A10CE Make : Learjet Model : 60

Installation of a Collins VHF-422C/D Comm System in place of a Collins VHF-422A/B Comm System, in accordance with FAA approved Master Drawing List No. LJ-1022-TUC, Revision C, dated August 4, 1999 or later FAA approved revision.

1. 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 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.

2. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

3. If the holder agrees to permit another person to use this certificate to alter this product, the holder shall give the other person written evidence of that permission.

4. A prerequisite to this installation is the installation of a Collins VHF-422A or VHF-422B comm system

Date of application : July 7, 1999

Date of issuance : August 16, 1999 Date reissued : February 12, 2004

( Signature) David G. Armstrong DAS administrator DAS-501508-CE, Learjet Inc.

Wichita,_Kansas (Title)

Transfer the ownership of the 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) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

Number