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5-24.
300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT)
DATA REFERENCE
Chapter 12
Chapter 65
Chapter 53
Chapter 65
Chapter 96
Chapter 64
ECCN EAR99
PROGRESSIVE INSPECTIONS
INSPECTION TASK DESCRIPTION
2.
Lubricate tail rotor driveshaft hanger bearings.
3.
Examine and lubricate the aft tail rotor driveshaft splined
adapter.
4.
Examine segmented driveshafts and aft splined adapter for
condition and security. Check splined adapters for adequate
lubrication and freedom of movement.
5.
Torque check disc pack coupling fasteners 50 to
70 inch-pounds (5.7 to 7.9 Nm).
TAIL ROTOR GEARBOX
1.
Examine tail rotor gearbox support for condition and
security. Pay particular attention for cracks at the gearbox
attachment holes.
2.
Examine tail rotor gearbox for oil leaks, condition and
security.
3.
Examine gearbox oil for evidence of contamination.
4.
Examine tail rotor output shaft for condition.
5.
Torque check tail rotor gearbox retaining nuts 50 to
70 inch-pounds (5.6 to 7.9 Nm).
6.
Examine the tail rotor gearbox chip detector for
accumulated material.
7.
Perform operational check of the tail rotor gearbox chip
detector.
TAIL ROTOR PITCH CHANGE CONTROLS
1.
Examine the tail rotor pitch control mechanism for freedom
of travel throughout range and for condition and security.
2.
Examine the following tail rotor pitch change components:
a. Boot for condition, security, and evidence of grease or
oil leakage.
BHT-206L4-MM-1
INITIAL
MECH
25 FEB 2011 Rev. 13
OTHER
5-00-00
Page 67
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