Page 5.30 Chapter 5 Inspections APR 2019
5-45 100-Hour / Annual Inspection (continued)
TAIL ROTOR & TAIL ROTOR GEARBOX
NOTE
Verify proper hardware installation securing plastic inspection
cover. Longer screws could contact aft flex coupling and yoke.
Plastic Inspection Cover:
Clean cover and inspect condition. Replace as required.
C947-3 (Tail Rotor Drive) Plate Assembly, Aft:
Refer to Figure 5-4A. Inspect condition. Verify no distortion, nicks, scratches,
cracks, corrosion, and fretting. If fretting is detected, contact RHC Technical
Support. Verify bonded washers are installed on both sides of each flex plate ear.
Verify proper installation, security, and operating clearance.
Tail Rotor Gearbox Input Yoke:
Inspect condition. Verify no cracks, corrosion, or fretting. Inspect weld for cracks
or corrosion. Verify proper installation, security, and operating clearance.
Tail Rotor Gearbox:
Inspect condition. Verify gearbox-to-tailcone mounting security. Verify no leakage
at input or output seals, chip detector, vent plug-filler assembly, or sight gage. With
ship on level ground, verify correct oil level and oil cleanliness through sight gage
and adjust or flush as required. Inspect Telatemp per § 5-35. Inspect output shaft
for nicks, scratches, dents, cracks, or corrosion. Verify proper installation of safety
wire (if installed).
Empennage:
Inspect condition. Verify no nicks, scratches, dents, cracks, corrosion, fretting, or
loose rivets on skins or near attachment points. Check tail rotor skid for evidence of
tail rotor or tail rotor skid strike. Refer to § 5-61 for tail rotor skid strike inspection
criteria. Verify no obstructions in lower vertical stabilizer and skid drain holes. Verify
proper installation and security.
Aft Navigation Light:
Inspect condition. Verify no cracks where aft navigation light mounts to empennage.
Verify lens cleanliness, clarity, and security. Verify proper operation.
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