Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
26 FEB 2013 Rev. 16 Page 87 Export Classification C, ECCN EAR99
g. Install plug button with sealant (C-308).
h. Ensure all drain holes are open.
i. Vertical fin spar caps forward side and web from upper
tailboom skin to approximately 4.0 inches (101.6 mm) below
upper tailboom skin as follows: remove aft tailboom access
door. Face aft and use bright light and small mirror to inspect
area for cracks, especially near rivet holes.
BHT-ALL-SPM
NOTE
If necessary, clean area with cloth dampened with
MEK (C-309) or equivalent. Ventilate area to prevent
breathing fumes.
Chapter 67 2. Antitorque controls:
a. Tail rotor control tubes between tail rotor pedals and tail
rotor gearbox for corrosion, wear, and damage.
b. Control tube bellcranks, supports, and attaching
hardware for corrosion, security, wear, and damage.
c. Tail rotor hydraulic actuator for leaks and security of
attachment, damage, corrosion, and bearings and linkages for
looseness.
Chapter 67 3. Aerodynamically actuated elevator:
a. Elevator control tube between forward support bracket
and elevator horn for corrosion, wear, and damage.
b. Control tube support and attaching hardware for
security, corrosion, wear, and damage.
c. Elevators and support structure for loose or missing
rivets and cracks in the skin.
d. Trailing edge tabs and tip caps for condition and
security.
SCHEDULED INSPECTIONS
5-10. 300 HOUR/12 MONTH INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER