Aeronotique

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SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE - T1 & T2 (CFM56-5B/ME) PNEUMATIC

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SINGLE AISLE TECHNICAL TRAINING MANUAL

PNEUMATIC
Pneumatic Level 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Engine Bleed System Description (3) . . . . . . . . . . . . . . . . . . . . . . . . 16 Pneumatic System Warnings (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Pneumatic System Operation (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 APU Bleed Air SPLY/X-Bleed System D/O (3) . . . . . . . . . . . . . . . . 36 BMC Interfaces (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Pneumatic Leak Detection System D/O (3) . . . . . . . . . . . . . . . . . . . . 42

U3T06191 - U1QT0M0

MAINTENANCE COURSE - T1 & T2 (CFM56-5B/ME) 36 - PNEUMATIC

TABLE OF CONTENTS

May 11, 2006 Page 1

SINGLE AISLE TECHNICAL TRAINING MANUAL

PNEUMATIC LEVEL 2 (2)
SYSTEM OVERVIEW
The Pneumatic system is used to supply High Pressure (HP) air for air conditioning, pressurization, engine start and anti-icing. HP air can be supplied from both engines, the APU or an external ground source. However, APU BLEED air could also be used in flight, depending on altitude. The APU bleed supply is connected to the left side of the crossbleed duct. On the ground, a HP ground power unit can be connected to the left side pneumatic system. The right side may be supplied by opening the crossbleed valve.

ENGINE BLEED
The engine bleed air is pressure and temperature regulated prior to supplying the pneumatic system. Air is bled from

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