Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
Page 42
Rev. 16 26 FEB 2013 Export Classification C, ECCN EAR99
a. Torque check nuts attaching actuator cylinder to upper
supports.
b. Remove bolts attaching actuator to lower supports.
Check cylinder alignment to lower support. Rod end bearing
side loads are not permitted. Reinstall bolts.
2. Aerodynamically actuated elevator check:
a. Inspect elevator control tube between forward support
bracket and elevator horn for corrosion, wear, and damage.
b. Inspect elevator control tube support and attaching
hardware for security, corrosion, wear, and damage.
c. Inspect elevators and support structure for loose or
missing rivets, cracks in skin, and corrosion.
d. Inspect trailing edge tabs and tip caps for condition and
security.
e. Functionally check operation of control tube as follows:
CAUTION
DO NOT RELEASE ELEVATOR AND ALLOW THE
S P R I N G T O D R I V E E L E VAT O R B A C K T O
ORIGINAL POSITION.
(1) Move elevator to extreme nose down position and
while holding allow to slowly return to original position. Failure to
return to original position, binding and/or lock-up are not
acceptable.
(2) If any of these conditions exist, replace tube.
f. Remove elevator control and measure spring breakout
force for 90 to 100 pounds (400.34 to 444.80 N).
g. Functionally check elevator rigging for proper travel.
Measure trailing edge for 16
 
1/4

angle down from upper
surface of elevator.
SCHEDULED INSPECTIONS
5-6. 100 HOUR/12 MONTH INSPECTION — PART A (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER