BHT-206A/B-SERIES-MM-1
5-00-00
Page 180 Rev. 14 30 APR 2013
Export Classification C, ECCN EAR99
Components removed from helicopter for evaluation
following an overtorque shall be evaluated as an
interrelated group. Removal records accompanying
each component shall cross-reference part and
serial numbers of other drive system components
removed for evaluation.
The overhaul inspection criteria in specific sections,
including limit charts and other pertinent information,
shall be used to establish that detail parts in each
assembly are dimensionally within limits and have
not yielded or become deformed.
BHT-206A/B-M&O,
BHT-206B3-CR&O
1. If an overtorque above 120% occurs, accomplish all
inspections required for overtorque — 110 to 120% and, in
addition, conduct the following inspection:
a. Main rotor hub. Remove and overhaul in accordance
with the conditional inspection criteria.
BHT-206A/B/L-Series-
CR&O
b. Main rotor mast. Remove and accomplish special
accident/incident overhaul inspections.
BHT-206A/B-M&O,
BHT-206B3-CR&O
c. Main transmission. Remove and overhaul. Replace top
case of main transmission. During overhaul, inspect gear
patterns for shifting and scuffing.
d. Driveshaft. Remove and overhaul.
e. Freewheel assembly. Remove and overhaul.
Rolls-Royce 250
Series Operation and
Maintenance Manual,
5W2 or 10W2
2. Refer to applicable Rolls-Royce 250 Series Operation and
Maintenance Manual for applicable inspection requirements.
BHT-206B3-CR&O 3. After the first 25 hours following an overtorque, conduct
thorough visual inspection of the following:
a. Main rotor blades and attachments
b. Main rotor hub assembly
5-56. OVERTORQUE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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