STC SA00445DE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA00445DE This certificate issued to: West Star Aviation, Inc 796 Heritage Way Grand Junction, Colorado 81506-8643 Part 23 of the Federal Aviation Regulations.

Original Product -Type Certificate Number: A28CE Make: Cessna Conquest Model: 441 Description of Type Design Change:

Installation of B/E Aeropsace Sweep-On 2000 Crew Oxygen Mask in accordance with West Star Aviation Inc. Master Drawing List Report No. 00-58057-MDL, Revision IR, dated May 5, 2000, or later FAA approved revisions.

1. FAA Approved Flight Manual Supplement, 00-58057-POHS, dated January 24, 2001 or later approved revision is required.

2. Instructions for Continued Airworthiness as addressed in Section li and Ill of West Star Aviation, Inc. Installation Manual Report 35-10-02, Revision IR, dated May 1, 2000, or later FAA accepted revision is required for this installation.

3. 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.

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: May 1, 2000 Date Reissued:

Date of Issuance: January 24, 2001 Date Amended:

FEDERAL AVIATION Ronald F. May (Signature), Manager TOMINIST RATION Northwest Mountain Region Denver Aircraft Certification Office (Title)