BHT-430-MM-2
5-00-00
Page 136 Rev. 15 26 JAN 2007
b. Do an overhaul of the components that follow. Make an
entry in the component record to show that the reason for
removal was an overtorque.
BHT-430-CR&O-2 (1) Mast assembly.
NOTE
When you overhaul the main transmission, examine
the gear teeth for scoring. Remove and scrap the top
case.
NOTE
Overhaul of the transmission assembly following an
overtorque above 115% has to be accomplished in
accordance with BHT-430-CR&O-2. However,
outboard quills P/N 222-040-022-111 and/or -112 do
not require an overhaul provided engine No. 1 and/or
engine No. 2 torque history shows no excursions
above published OEI limits.
Verify engine(s) history as follows:
NOTE
The IIDS and FADEC system must be self-tested to
confirm proper functioning. Self-test is performed
every time power is applied to the helicopter.
(a) Verify proper functioning of both IIDS and
FADEC system. SHOULD THE IIDS OR FADEC FAIL
SELF-TEST, BOTH OUTBOARD QUILLS WILL REQUIRE
OVERHAUL.
(b) Review engine(s) torque history in the
maintenance pages of both IIDS screens and by interrogating
the engine(s) ECU using the MT35 program.
BHT-430-CR&O-2 (2) Transmission assembly.
BHT-430-CR&O-3 (3) Tail rotor hub and blades.
CONDITIONAL INSPECTIONS
5-48. OVERTORQUE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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