BHT-407-MM-1
5-00-00
4 OCT 2013 Rev. 38
Page 85
Export Classification C, ECCN EAR99
MAIN ROTOR CONTROLS
Chapter 67
1.
Inspect all fixed and rotating control components and
bearings for arcing, burning, heat discoloration, welding, or
other indications of lightning damage. For components with
indications of lightning damage, inspect any bearings for
smooth operation and the component for any damage. If
damage is evident, remove supports and inspect mounting
holes and mating surfaces for arcing damage. Blend out any
damage to twice its visible depth. Do not exceed any damage or
repair limits for the part. Replace any bearings with evidence of
damage. If bearing cannot be replaced, replace the entire part.
Chapter 62
SWASHPLATE
1.
Remove the swashplate assembly. Put a tag on the
swashplate assembly and write, “THIS SWASHPLATE
ASSEMBLY WAS REMOVED FROM SERVICE BECAUSE OF
A LIGHTNING STRIKE.” Send the swashplate assembly to an
approved facility for overhaul. If a part shows signs of arcing,
discard it.
Chapter 63
TRANSMISSION AND MAST ASSEMBLY
1.
Remove the mast assembly. Disassemble it and examine
for condition as follows:
a.
Examine all of the components for signs of arc burns.
Pay particular attention to the bearing ring raceways.
b.
If you do not see arc burns and if you do not find arc
burns on any main rotor or on any main rotor control
component, then the mast assembly is serviceable. You do not
have to inspect the transmission.
c.
If you see arc burns on the mast assembly, on the main
rotor, or on a main rotor component, then remove the
transmission and mast assembly. Put a tag on the transmission
and mast assembly and write, “THIS TRANSMISSION AND
MAST ASSEMBLY WAS REMOVED FROM SERVICE
BECAUSE OF A LIGHTNING STRIKE.” Send the transmission
and mast assembly to an approved facility for overhaul.
CONDITIONAL INSPECTIONS
5-32. AFTER LIGHTNING STRIKE (CONT)
DATA REFERENCE
INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
