Textron Bell 412 - Fuselage Aft;Tailboom Attachment; Tailboom

BHT-412-MM-2
5-00-00
26 FEB 2013 Rev. 16 Page 65
Export Classification C, ECCN EAR99
b. Gas generator case for cracks, buckled areas, and hot
spots.
c. Oil and fuel hoses and tubes for chafing, leaking, and
security.
d. Electrical wiring for fraying, chafing, and security.
Chapter 71 12. No.2 (right) engine power section:
a. Exhaust ejector and duct for damage and security.
b. Gas generator case for cracks, buckled areas, and hot
spots.
c. Oil and fuel hoses and tubes for chafing, leaking, and
security.
d. Electrical wiring for fraying, chafing, and security.
Chapter 71 13. Engine firewalls, air intake ducts, and plenum for cracks,
distortion, missing rivets, broken spot welds, and deteriorating
seals or gaskets.
Chapter 71 14. Engine cowling for missing fasteners and cracks. Latches
for proper operation.
Chapter 53 FUSELAGE AFT/TAILBOOM ATTACHMENT
1. Inspect fuselage tailboom attachment points for security
and evidence of fretting.
ASB 412-00-100 2. Every fourth 25 Hour/30 Day Inspection:
a. Inspect fuselage and tailboom attachment components
and hardware for cracks with 10X magnifying glass. Pay
particular attention to interface between forward end of
tailboom attachment fitting and cap angle, and main beam web
area below cap angle (Figure 5-6).
TAILBOOM
Chapter 53 1. Tailboom structure:
SCHEDULED INSPECTIONS
5-9. 25 HOUR/30 DAY INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER