TM 55-1520-240-23-5
6-28
PHASE ROTARY-WING BLADES
6-28
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Phasing Block (2) (APP E-5)
Materials:
None
Personnel Required:
CH-47 Helicopter Repairer (2)
Inspector
References:
Task 6-29
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
No. 9 Drive Shaft Removed (Task 6-21)
Tiedown Line Installed on One Forward and One Aft
Blade (Task 1-26)
Forward Transmission Fairing Left Work Platform
Open (Task 2-2)
Aft Pylon Right Work Platform Open (Task 2-2)
General Safety Instructions:
WARNING
Improper phasing can result in injury
to personnel and serious damage to
helicopter.
Change 1
6-77
