TM 55-1520-240-T
2-1.2.2 HIGH FREQUENCY VIBRATION ISOLATION PROCEDURE
2-1.2.2
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanics Tool Kit,
NSN 5180-00-323-4692
Chadwick Helmuth Model 192 Spectrum Analyzer
with Vib Pickups
Materials:
Two 1-Inch Square Steel Blocks (See Below)
Personnel Required:
References:
TM 55-1520-240-23
TM 55-1520-240-10
Equipment Condition:
TM 55-1520-240-23:
Battery Connected
Electrical Power On
Hydraulic Power On
Helicopter Prepared for In-Flight Blade Balancing
Visual Check Performed
Medium Helicopter Repairer (2)
Army Rotary Wing Aviator (2)
Technical Inspector
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2-4.6
Change 5