BELL HELICOPTER 430 - 5-51. OVERSPEED; 1. If the main rotor speed goes above 109%, but not more than 120%, visually examine the following components.

BHT-430-MM-2
5-00-00
26 JAN 2007 Rev. 15 Page 147
CONDITIONAL INSPECTIONS
5-51. OVERSPEED
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. ____________________
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FACILITY: _________________________________________
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HELICOPTER S/N: __________________________________
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REGISTRY NO.: ____________________________________
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TOTAL TIME:______________________________________
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SIGNATURE:_______________________________________
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Rolls-Royce
250-C40B Operation
and Maintenance
Manual, Publication
CSP 21000
Rotor overspeed is any incident where the main rotor speed
goes past 109%. Refer to engine operation and maintenance
manual for the overspeed limits and inspection procedures.
1. If the main rotor speed goes above 109%, but not more
than 120%, visually examine the following components. If no
damage is found, no further inspection is required.
a. Main rotor yokes and blades.
b. Swashplate and levers assembly.
c. Drive hub, drive link and idler link assemblies.
d. Tail rotor driveshafts and hanger assemblies.
e. Tail rotor gearbox.
f. Tail rotor hub assembly.
g. Tail rotor blades.
(1) Do a visual and tap inspection.
(2) If the blade shows signs of bond separation, scrap
the blade.
(3) If the tip or root end balance weights have moved,
scrap the blade.