TB 1-1670-260-12
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Structure
Inspection
Criteria
Corrective action
Tail Rotor Blades
Visual
Blades Left on for
Replace TR Blades
recovery
Engine to Transmission
Visual
K-Flex Coupling Left
Replace K-Flex Coupling
drive Shaft Flex Frame
on for recovery
and sent to manufacturer for
(K-Flex)
inspection
Tail Rotor Hub Assembly
Visual
Cracks, distortion, bent
Inspect per TM 1-1520-
linkages, missing,
248-23 Task 5-4-1
sheared, or loose
fasteners
Landing Skids and
Visual
Hard Landing Evidence
Inspect per TM 1-1520-
Airframe
248-23
Vertical Fin and Soft
Visual
Cracks, distortion,
Inspect per TM 1-1520-
Mounts
buckled skin, missing,
248-23
sheared, or loose
fasteners
Tail Rotor Gearbox
Visual
Cracks, distortion,
Inspect per TM 1-1520-
Support and Adjacent
buckled skin, missing,
248-23
Skin
sheared, or loose
fasteners
Drive Shaft Cover at sling
Visual
Damage, dents, cracks,
Inspect per TM 1-1520-
contact points
abrasion
248-23
Horizontal Stabilizer
Visual
Damage, cracks,
Inspect per TM 1-1520-
Surrounding Skin
deformation, and
248-23
security
Airframe Tailboom Joining Visual
Distortion, deformation,
Inspect per TM 1-1520-
Area, Attachment Fittings,
buckled skin, cracks,
248-23
Bulkhead Webs and Skins
missing, sheared, or
loose fasteners
Tailboom Attachment Bolt Verify Torque
Loss of Preload
Inspect per TM 1-1520-
248-23 Chapter 1
Remove Cowlings
Visual
Damage, cracks,
Inspect per TM 1-1520-
deformation, and
248-23
security
Pylon Support Structure
Visual
Cracks, Deformation,
Inspect per TM 1-1520-
on Cabin Roof and
loss of attachment
248-23
Surrounding Airframe
hardware, loose or
broken fasteners
Main Rotor Blade *
Visual and
Damage, cracks, de-
Inspect per TM 1-1520-
cheesecloth*
248-23
