BHT-412-MM-2
5-00-00
Page 152 Rev. 16 26 FEB 2013
Export Classification C, ECCN EAR99
The following recommendations are not mandatory,
but are intended to aid the operator to reduce
unscheduled maintenance.
Recommend replacement of damper yoke sets at
each 2500 hour special inspection and replacement
of damper bearings at 5000 hour interval (each
second 2500 hour special inspection).
4. Visually inspect droop restraint system components for
condition and security. Inspect and replace droop restraint bolts
if any thread damage, shank wear, distortion, or corrosion is
detected.
5. Visually inspect simple pendulum absorbers components
for condition and security. Inspect and replace simple
pendulum absorbers bolts if any thread damage, shank wear,
distortion, or corrosion is detected.
6. Inspect main rotor mast nut and blade bolts for condition.
Chapter 4 7. Check for retirement life of components.
8. Treat and/or touch-up all damaged painted surfaces as
required.
Chapter 62
BHT-412-CR&O
9. Reassemble main rotor hub.
5-28. EACH 2500 HOURS OF MAIN ROTOR HUB ASSEMBLY OPERATION (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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