5-45 100-Hour / Annual Inspection (continued)
MAST FAIRING
Mast Fairing:
Inspect condition. Verify no nicks, scratches, dents, cracks, corrosion, fretting,
or loose rivets. Verify no yielding or cracking of pitot line and fuel vent restraint
assembly.
NOTE
Yielding can be caused by over tightening screws in restraint
nutplates.
Upper & Lower Ribs:
Inspect condition. Inspect for cracks especially around mast tube attachments.
Verify proper installation and security of ribs and lower rib clamp.
Vertical Push-Pull Tubes:
Examine accessible portion with inspection light and mirror. Inspect condition per §
5-32. Verify no nicks, scratches, chafing, dents, cracks or corrosion. Inspect rod
end bearings per § 5-33; verify rod ends are centered and palnut and jam nut are
tight. Check witness holes for proper thread engagement. Verify proper installation,
security, and operating clearance.
Pitot Tube & Line:
Inspect pitot lines for obstructions, cracking, chafing, pinching or kinking. Verify
integrity of pitot and static line connections. Verify proper routing and security of
pitot tube and line. Verify no cracks where pitot tube mounts to mast fairing. Verify
no obstructions in pitot tube.
Fuel Vent Weldment and Tygon® Tubes:
Inspect condition. Verify no obstructions, cracking, chafing, pinching or kinking in
plastic tubes. Inspect vents for cracks or obvious damage. Verify proper installation
and security of safety wire.
Swashplate Upper Scissors:
Inspect condition. Verify bearing play within limits referenced in § 67-40, steps 9
and 10. Closely examine scissor linkage while a second person raises and lowers
collective stick. Verify bolts and washers rotate together through full control travel
without binding. Inspect fork assembly rod end bearing per § 5-33; verify rod end is
centered and palnut and jam nut are tight. Verify proper installation of all parts, part
security, and operating clearance.
Page 5.32 Chapter 5 Inspections JUL 2020
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