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I.
7.10 PERIODIC INSPECTION REQUIREMENTS
1.
Pre-Flight:
a)
Check rotor for freedom of movement.
2.
Post Flight:
a)
Check rotor for freedom of movement.
b)
Check honeycomb -seals for deep or heavy rubs.
c)
Check blade for nicks and dents.
d)
Check bucket airfoils for foreign object damage.
e)
Check exit vanes for foreign object damage.
f)
Check rear frame for excessive cracks at sawcuts.
3.
50 Hour (Recommended)
a)
Remove rear frame and rotor per disassembly instruction.
b) Visually check and repair per table of repair limits.
c)
Repack bearing.
4.
Preservation:
a)
No preservation requirements have been established,
b)
Based on lift fan experience and grease packed bearings have a
life of at least i2 months before repacking is required.
7.11
PITCH FAN SERIAL NUMBERS
Sub assemblies and pitch fan assemblies will be assigned serial numbers
at initial buildup and this number will be vtbro-etched to the following
assemblies in the location noted below:
Pitch Fan S/N - Flat at end of minor strut, 45* position
Front Frame S/N
-
Pad provided at i2 o'clock position on outboard
side of frame
Rear Frame S/N
-
12 o'clock on bottom flange of outer skirt
Rotor Assembly S/N - On disc between blades #1 and
36
Scrolls S/N - Inlet flange top side
11-7.23
R-2
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