Textron Bell 212, Maintenance Manual

Page: 233 / 269

BHT-212-MM-1
5-00-00
Page 198
Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99
NOTE
Components removed from a helicopter for
evaluation following a sudden stoppage 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.
Sudden stoppage is defined as any rapid
deceleration of drive system whether caused by
seizure within helicopter transmission or by contact
of main or tail rotor blades with the ground, water,
snow, dense vegetation, trees, or other objects of
sufficient density to cause rapid deceleration. Main or
tail rotor blade damage, when caused by striking
some object sufficient to require blade replacement
(defined as removal for repair or scrap), is
considered sudden stoppage. When sudden
stoppage occurs, inspect helicopter and replace
components as follows:
1. Perform a sudden stoppage inspection as follows:
NOTE
If sudden stoppage inspection is the result of a tail
rotor strike or main rotor blades striking the tail rotor
driveshaft, comply with
step g through step n .
a. Main rotor blades.
(1) Visually inspect both main rotor blades for
evidence of damage. Check closely for wrinkled skin.
(2) If any blade is damaged sufficiently to require
blade repair, return both blades to an authorized overhaul
facility. Make an entry in component record to show reason for
removal was sudden stoppage.
(3) If no evidence of damage is found on either blade,
both blades may be retained in service.
CONDITIONAL INSPECTIONS
5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER