Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
30 AUG 2013 Rev. 19 Page 221 Export Classification C, ECCN EAR99
e. If main rotor blades, main rotor hub, main driveshafts,
or tail rotor output coupling exhibit evidence of damage that can
be attributed to a lightning strike, remove transmission and
mast assembly for overhaul. State lightning strike as reason for
removal. If no evidence of damage is noted on the above
mentioned components, inspect main transmission as follows:
Chapter 63 (1) Remove and inspect all transmission chip
detectors.
(2) If any evidence of arc burning or pitting is noted or
excessive debris is found on chip detectors, remove
transmission and mast assembly for overhaul. State lightning
strike as reason for removal.
(3) If no evidence of arc burning or pitting is noted,
ground run light on skids for 1 hour. Reinspect chip detectors
and remove and inspect oil filter. Repeat these inspections after
accumulating 5 flight hours but prior to 10 flight hours.
Chapter 64 f. Inspect tail rotor blades and hub. If indications of burns
or debonding are present, send the blades to a Bell Helicopter
Textron approved blade repair facility for evaluation. State
lightning strike as reason for removal. Remove tail rotor hub for
overhaul.
Chapter 65 g. Remove and inspect tail rotor gearbox and
intermediate gearbox chip detectors.
h. If tail rotor blades, tail rotor hub, or tail rotor output
coupling exhibit evidence of damage that can be attributed to a
lightning strike or excessive debris is found on chip detectors,
remove tail rotor gearbox, intermediate gearbox, and tail rotor
driveshaft hangers for overhaul. State lightning strike as reason
for removal. Additionally, tail rotor driveshaft tubes, disc pack
couplings, and attaching hardware shall be visually inspected
for evidence of arc burns or pitting. Any evidence of arc burning
or pitting is cause for rejection.
i. If no evidence of arc burning or pitting is noted, ground
run light on skids for one hour. Reinspect chip detector. Repeat
this inspection after accumulating 5 flight hours but prior to 10
flight hours.
CONDITIONAL INSPECTIONS
5-42. AFTER LIGHTNING STRIKES (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER