[Transcriber's Note: Typographical errors (such as "COMAT" appearing for "COMBAT" in the title) and punctuation inconsistencies have been retained. The goal has been to provide a historically accurate representation of the original 1944 publication.] RESTRICTED NOTES ON THE USE OF OXYGEN EQUIPMENT IN THE B-17, B-24, & B-29 FOR COMAT CREWS * * * * * * * * * * * * * * THIS PUBLICATION MAY BE USED BY PERSONNEL RENDERING SERVICE TO THE UNITED STATES OR ITS ALLIES Paragraph 5.d. of Army Regulation 380-5 relative to the handling of "restricted" printed matter is quoted below. "d. Dissemination of restricted matter.--The information contained in restricted documents and the essential characteristics of restricted material may be given to any person known to be in the service of the United States and to persons of undoubted loyalty and discretion who are cooperating in Government work, but will not be communicated to the public or to the press except by authorized military public relations agencies." RESTRICTED FOREWORD These notes were originally intended as a source of general reference concerning OXYGEN EQUIPMENT AND ITS USE by members of crews of the B-17 and B-24 heavy bomber. With the advent of the B-29 as a combat bomber, the section on THE B-29 AT HIGH ALTITUDE (Page ) was added to supply certain specialized information concerning this ship. Every B-29 crew member should be familiar with the INTRODUCTION and the section on THE DEMAND OXYGEN SYSTEM as well as this specialized information. The subject matter is presented from a PRACTICAL point of view, based upon actual experiences encountered on altitude missions. Detailed information on oxygen equipment may be found in the following TECHNICAL ORDERS. 03-50-1 Use of Oxygen and Oxygen Equipment. 03-50A-5 Type A-12 Demand Oxygen Regulator (Pioneer). 03-50A-8 Type A-12 Demand Oxygen Regulator (Airco). 03-50B-1 Type A-10 Revised Oxygen Mask. 03-50B-6 Type A-14 Demand Oxygen Mask. 03-50C-3 Low Pressure Oxygen Cylinders. 03-50D-1 Oxygen Pressure Signal Assembly. 03-50D-2 Oxygen Flow Indicator Type A-1. 03-50D-4 Oxygen Flow Indicator Type A-3. 03-50D-5 Oxygen Pressure Gage Type K-1. INDEX