BHT-206L4-MM-1
5-00-00
ECCN EAR99
7. In addition ALL bonded tail rotor driveshafts shall be
considered unserviceable and scrapped, if during a sudden
stoppage inspection any of the following conditions that are
attributable to the sudden stoppage are noted:
a. Any impact damage to a tail rotor blade leading edge or
skin, or any tail rotor blade skin buckling or tearing.
b. Any deformation of any coupling discs that result in
gaps between laminates greater than 0.015 inch (0.381 mm).
c. Structural failure or distortion of any coupling disc bolts.
d. Structural failure or distortion exceeding the specified
limits of the tail rotor driveshaft steel or aluminum adapters.
8. lnspect tailboom area of tail rotor gearbox mounting studs
and dowel pins for cracks using a 10X magnifying glass or
fluorescent penetrant method of inspection.
9. Inspect the four tailboom attachment points for cracks,
distortion damage, and security. Check torque on nuts of
tailboom attachment bolts.
10. lnspect tailboom internally for cracks, distortion, and loose
or missing rivets. Check external skin of tailboom for cracks
paying particular attention to area of horizontal stabilizer and
attachment points of vertical fin.
11. Inspect horizontal stabilizer and finlets for cracks and
overall condition.
BHT-206L-CR&O 12. Inspect vertical fin for security and overall condition. Check
tail skid for condition and security. Check mounting of
anticollision light for security and condition.
Rolls-Royce 250-C30
Series Operation and
Maintenance Manual,
14W2
13. Refer to the Rolls-Royce 250-C30 Series Operation and
Maintenance Manual, 14W2 for sudden stoppage inspection
requirements.
5-52. SUDDEN STOPPAGE/ACCELERATION — TAIL ROTOR (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
25 FEB 2011 Rev. 13 Page 155/156
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