BHT-430-MM-2
5-00-00
26 JAN 2007 Rev. 15 Page 129
(b) The gap at the tail rotor driveshaft disc
couplings is more than 0.005 inch (0.127 mm).
(c) If you find that the tail rotor driveshaft tubes
are bent or twisted.
(d) If there are chips or other damage to the tail
rotor driveshaft coupling gear contact pattern.
h. Tail rotor hub and blade assembly:
BHT-430-CR&O-3 (1) If the sudden stoppage started at the main rotor or
transmission, you may keep the tail rotor hub and blade
assembly in service as long as there is no visible external
damage. If you find damage on the tail rotor hub and blade
assembly, remove it and do an overhaul. Make an entry in the
component record to show that the reason for removal was a
sudden stoppage.
2. Do the inspection that follows if the sudden stoppage was
caused by a tail rotor strike.
a. Tail rotor driveshaft hangers and coupling:
(1) Examine all of the tail rotor driveshaft hangers. If a
shaft has been damaged by a main rotor strike or any other
circumstance other than torsional overload, replace the hangers
that the damaged shaft was attached to. If any shaft fails
because of a torsional overload, remove and scrap all the
hangers, couplings and driveshafts.
(2) Remove the gear coupling assembly at the
transmission tail rotor output quill. Disassemble as necessary to
examine the condition of both the drive and coast side of the
male and female coupling teeth.
BHT-430-CR&O-3 (3) If none of the conditions in step (1) are found and
there is no damage that could make the hanger assemblies
unserviceable, do an overhaul of the hanger assemblies and
coupling assembly. Make an entry in the component records to
show that the reason for removal was a sudden stoppage.
CONDITIONAL INSPECTIONS
5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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