SAIB CE-04-67

SPECIAL

AIRWORTHINESS

INFORMATION

BULLETIN

Aircraft Certification Service Washington, DC

U.S. Department of Transportation Federal Aviation Administration

CE-04-67 May 6, 2004 www.faa.gov/certification/aircraft This is information only. Recommendations aren’t mandatory.

Introduction

This Special Airworthiness Information Bulletin informs you, owners and operators of Learjet (Gates) model 35 and 36, of the availability of Bombardier Aerospace Recommended Service Bulletin (SB) 35/36-35-4.

Background

We have received reports, including a safety recommendation from the National Transportation Safety Board, that verifying the ON-OFF position of the oxygen bottle regulator is difficult to ascertain visually on the Learjet 35 and 36. Bombardier has re-designed the ON-OFF placards for this regulator and their SB 35/36-35-4 provides instructions to install the new placards.

Recommendation

We highly recommend that you install the newly designed oxygen bottle regulator ON-OFF placards as instructed in Bombardier Aerospace Service Bulletin SB 35/36-35-4.

For Further Information Contact

Michael Imbler, Senior Aero Engineer; FAA Wichita Aircraft Certification Office, 1801 Airport Rd, Room 100, Wichita, Kansas, 67209; phone: (316) 946-4147; fax: (316) 946-4107; email:

michael.imbler@faa.gov

For Service Bulletin Information Contact

Mr. Randy Williams, phone: (316) 946-2725; email: randy.williams@Learjet.com;

Learjet, Inc., 7761 West Kellogg, Building 11, Mail Stop 71, Wichita, KS 67209.