BHT-206L4-MM-1
5-00-00
7 JUN 2013 Rev. 18 Page 177
Export Classification C, ECCN EAR99
e. Inspect nodal beam, transmission mount fittings, and
engine mounts.
BHT-206L-CR&O (1) Visually inspect exterior surfaces for evidence of
arcing or burning. Special attention should be given to contact
surfaces of transmission and engine to their mounting systems,
and of mounting systems to the airframe.
(2) If indications of arcing or burning are present,
overhaul parts.
f. Inspect tail rotor blades and hub. Scrap blades if
indications of burns or debonding. Remove tail rotor hub for
overhaul. State lightning strike as reason for removal.
g. Remove tail rotor driveshaft bearing hangers and tail
rotor gearbox and return for overhaul. State lightning strike as
reason for removal.
h. Check auxiliary fins for evidence of burning or
debonding.
i. lnspect tailboom fitting for indication of arcing burns
around mounting points of tail rotor gearbox and vertical fin.
Rolls-Royce 250-C30
Series Operation and
Maintenance Manual,
14W2
j. Inspect power plant assembly.
3. If no indications of damage are found, do the following:
If no visual indications of damage are present, check
all ferrous dynamic components by magnetometer. If
magnetism is present, perform procedure indicated
in step 2. Demagnetize all parts.
BHT-206L-CR&O a. Remove main rotor hub and blade assembly. Remove
main rotor grips.
(1) Visually inspect needle bearings for signs of
electrical arcing, burning, or delamination.
5-56. LIGHTNING STRIKE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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