BHT-430-MM-2
5-00-00
26 JAN 2007 Rev. 15 Page 97
c. Inspect external surface of mast, mast flange, and
upper spline area for wear, damage, and corrosion.
d. Reassemble main rotor hub assembly.
e. Install the main rotor blades.
INSTRUMENTS
Chapter 95 1. Drain any collected moisture from the pitot-static system
pipes. (F1/F2)
VERTICAL FIN
Chapter 53 1. Remove vertical fin. Discard nuts.
2. Inspect the vertical fin and tailboom fittings for cracks,
elongation of bolt holes, distortion and corrosion.
3. Inspect bolts for serviceability.
4. Temporarily install vertical fin to tailboom using correct
hardware. Tighten hardware 5 inch-pounds (0.5649 Nm) plus
tare. Using feeler gauge, measure gap at eight locations where
vertical fin fitting contacts tailboom fitting. Gap shall be less than
0.003 inch (0.076 mm). If gap is larger than 0.003 inch (0.076
mm), fill gap using shim P/N 120-008C40E11. Maximum
allowable shim thickness is 0.010 inch (0.254 mm). Remove
vertical fin.
CAUTION
ATTACHING HARDWARE SHALL BE TORQUED
TO SPECIFIED TORQUE WITHIN 60 MINUTES
AFTER APPLICATION OF SEALANT (C-308).
5. Apply sealant (C-308) to faying surfaces of vertical fin
fitting and tailboom fitting. If required, install shim.
6. Apply corrosion preventive compound (C-104) to all bolt
shanks.
SCHEDULED INSPECTIONS
5-36. EVERY 2 CALENDAR YEARS (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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