BELL HELICOPTER 430 Maintenance Manual page 127

5-36. EVERY 2 CALENDAR YEARS (CONT)
DATA REFERENCE
Chapter 95
Chapter 53
SCHEDULED INSPECTIONS
INSPECTION TASK DESCRIPTION
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
1. Drain any collected moisture from the pitot-static system
pipes. (F1/F2)
VERTICAL FIN
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.
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.
CAUTION
26 JAN 2007 Rev. 15
BHT-430-MM-2
INITIAL
MECH OTHER
5-00-00
Page 97