Robinson Helicopter Company RTR 660, Maintenance Manual

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SEP 2012 R66 Maintenance Manual Chapter 5 Inspection Schedule
Page 5.29
5-45 100-Hour / Annual Maintenance and Inspection
[17 of 25 Pages]
TAILCONE
Inspection Plugs:
Inspect condition. Verify proper operation of fasteners.
Tail Rotor Drive Shaft Assembly:
Examine accessible portion through inspection holes with inspection light and mirror.
Verify no cracks, corrosion, or fretting in fore and aft weldment. Verify no evidence
of drive shaft contact with tailcone bays. Verify no bowing, bends, dents, cracks,
or corrosion. Perform tail rotor drive shaft runout per Section 65-21. Verify proper
installation, security, and operating clearance.
CAUTION
Bowing, bends, dents, cracks, or corrosion are cause for immediate
replacement of tail rotor drive shaft.
Tail Rotor Push-Pull Tube & Forward Bellcrank:
Examine accessible portion through inspection holes with inspection light and mirror.
Inspect condition per Section 5-32. Verify no nicks, scratches, chafing, dents, cracks,
or corrosion. Inspect rod end bearings per Section 5-33; verify rod ends are centered and
palnut and jam nut are tight. Check witness holes for proper thread engagement. Inspect
bellcrank and bellcrank mount for nicks, scratches, dents, cracks, or corrosion. Inspect
spherical bearings per Section 5-33. Verify proper installation, security, and operating
clearance. Verify tail rotor guard mounting screw shanks clear push-pull tube.
Tail Rotor Drive Shaft Hanger Bearing & Hanger:
Inspect condition. Inspect bearing for obvious damage. Verify integrity of bearing
seals. Verify bearing’s inner race-to-drive shaft torque stripe is intact and no evidence
of bearing slippage. Verify no bends, cracks, corrosion, or obvious damage to hanger
and hanger mount to tailcone bulkhead. Verify proper installation, security, and smooth
operation.
Tail Rotor Drive Shaft Damper Assembly:
Inspect condition. Inspect bearing for obvious damage. Verify integrity of bearing
seals. Inspect bearing housing for cracks or corrosion. Verify bearing’s inner race-
to-drive shaft torque stripe is intact and no evidence of bearing slippage. Verify no
bends, cracks, corrosion or obvious damage to friction arms and (Teflon) bearings.
Verify proper installation, security, and smooth operation.
Tailcone Interior:
Inspect condition. Verify no nicks, scratches, dents, cracks, corrosion, fretting or
loose rivets. Verify no cracks where damper assembly mounts to tailcone. Verify
no excessive wear in bulkhead bushings from push-pull tubes. Retrieve and discard
trapped debris.
Tailcone Exterior:
Inspect condition. Refer to Section 53-41. Inspect tailcone exterior for nicks, scratches,
dents, cracks, corrosion, fretting or loose rivets. Verify no obstructions in drain hole
at forward edge of each bay (except forward bay).
Antennas:
Inspect condition. Verify no cracks where antennas mount to tailcone. Verify
security.