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.