TM 55-1520-240-23-4
5-52
CENTRIFUGAL DROOP STOP FUNCTIONAL CHECK
5-52
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Materials:
Epoxy Primer (E292.1)
Black Polyurethane Paint (E285.1)
Cloths (E120)
Gloves (E184.1)
Masking Tape (E388)
Nitric Acid (E22)
Personnel Required:
Medium Helicopter Repairer (5)
Inspector
References:
TM 1-1520-253-23
Task 2-350.1
Task 5-54
Task 5-55
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Tiedown Line Installed On One Forward and One Aft
Blade (Task 1-26)
Aft Pylon Work Platform Open (Task 2-2)
Droop Stop Shroud Removed (Task 5-48.3)
General Safety Instructions:
Do not lower blade suddenly.
Personnel can be injured if blade is
lowered suddenly while droop stop
work is in progress.
Nitric acid (E22) is extremely toxic.
It can irritate skin and cause burns.
Avoid inhaling. Use only with
adequate ventilation. Avoid contact
with skin, eyes, or clothing. In case
of contact, immediately flush skin
or eyes with water for at least 15
minutes. Get medical attention for
eyes.
5-233
