Textron Bell 412 - Page 126

BHT-412-MM-2
5-00-00
Page 90 Rev. 23 15 DEC 2015
Export Classification C, ECCN EAR99
b. Clean chip detector.
c. Functionally test chip detector electrical circuit.
Chapter 12 d. Service gearbox as required.
Chapter 65 10. Tail rotor gearbox:
a. Chip detector for debris.
b. Clean chip detector.
c. Functionally test chip detector electrical circuit.
d. Service gearbox as required.
Chapter 64 11. Tail rotor hub and blade assembly:
Chapter 18 a. Dynamically balance tail rotor.
b. Torque check nuts on tail rotor blade retention bolts.
c. Torque check tail rotor retaining nut.
CABIN ROOF
Chapter 52
Chapter 53
1. Cabin roof structure:
a. Cabin roof structure, cowlings and fairings for damage,
delamination, and general condition.
b. Cabin roof and cowling/fairing mounted antennas for
condition and security.
Chapter 62 2. Main rotor hub and blade assembly:
a. Main rotor blades upper and lower surfaces for
condition of bond lines and doublers. Leading edge for erosion.
Blade surfaces for corrosion, cracks, damage, and voids.
b. Main rotor hub assembly for corrosion and damage.
SCHEDULED INSPECTIONS
5-10. 300 HOUR/12 MONTH INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER