BHT-212-MM-1
5-00-00
Page 78 Rev. 14 26 JUN 2013
Export Classification C, ECCN EAR99
Chapter 63 8. Main rotor mast:
a. Inspect mast assembly for security, corrosion, and
mechanical damage. Pay particular attention to area contacted
by main rotor static stops and damper assembly/adapter set
splines.
b. Inspect for evidence of oil leaks at mast bearing cap.
c. Mast nut for security.
Chapter 63 9. Engine-to-transmission (main) driveshaft:
a. Main driveshaft for corrosion, condition, and security.
THE CAUSE OF ANY DISCOLORATION SHALL BE
DETERMINED AND CORRECTED PRIOR TO
NEXT FLIGHT.
b. Main driveshaft forward and aft couplings, boots, seals
and surrounding area for grease leakage, damage, corrosion,
and evidence of overheat as indicated by TEMP-PLATES or
coupling discoloration. A change in color of any yellow bordered
TEMP-PLATE, from white/off-white to black, will indicate a
possible overheat condition and/or component degradation
(step c). If one or more of the red bordered TEMP-PLATE dots
change from white/off-white to black, an overheat condition is
present and may require replacement of both outer and inner
couplings.
c. Overheat TEMP-PLATES for condition and security.
TEMP-PLATES must not show evidence of overtemperature
indication, deterioration, debonding, or excessive discoloration
of the epoxy overcoating.
5-12. 25 HOURS/30 DAYS — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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