Textron Bell 412, Maintenance Manual

Page: 60 / 288

BHT-412-MM-2
5-00-00
Page 28
Rev. 16 26 FEB 2013 Export Classification C, ECCN EAR99
Paragraph 5-44 8. Overhaul all components that have completed published
overhaul periods.
Chapter 12 9. Perform lubrication requirements.
10. Remove all panels, fairings, and cowlings required to
satisfactorily carry out the inspection.
NOTE
The following step is to be performed every
12 calendar months.
11. Inspect all fuel system, oil system, and hydraulic system
filler caps for proper functioning and sealing. Make sure the
sealing O-rings within the filler caps are in good condition.
Repair or replace the filler caps or replace sealing O-rings as
required.
AFTER COMPLETION OF INSPECTION
1. Reinstall all panels, fairings, and cowlings removed during
inspection.
2. Carry out a ground run and leak check prior to releasing
the helicopter back to service.
Chapter 21 HEAT/VENT AIR DUCTS
1. Visually inspect all heating, ventilation, cooling ducts, and
controls for cracks, security, and for proper operation.
Every sixth 100 hour inspection (600 hours) or 12 months:
Chapter 96 1. Bleed air heating and ventilation/defog system
components:
a. Perform operational check of bleed air heating system
and components.
b. Perform operational check of defog blower.
SCHEDULED INSPECTIONS
5-6. 100 HOUR/12 MONTH INSPECTION — PART A (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER