Chapter 6 - Bell 206L4 Maintenance Manual

BHT-206L4-MM-1
5-29. 300-HOUR INSPECTION (CONT)
DATA REFERENCE
BHT-206-SRM-1
Chapter 65 and
Chapter 12
BHT-ALL-SPM,

Chapter 6

Chapter 65
Chapter 12
5-00-00
Page 90 Rev. 13 25 FEB 2011
SCHEDULED INSPECTIONS
INSPECTION TASK DESCRIPTION
b. Open engine compartment cowling.
c. Using bright light and mirror, inspect exposed upper and
lower edges of the joints and fastener between aluminum
longeron and titanium engine pan. Edge of sealant coating
should be visible. No indications of corrosion are acceptable.
d. If there is no indication of corrosion and the bonded
surface seal is present, replace access panel and close engine
compartment cowling door. If corrosion is present or bonded
surface seal is not present, refer to the BHT-206-SRM-1 for
repair procedures.
e. Inspect engine mount attachment structures for cracks
and condition.
f. Remove fuel shutoff valve access panel. Inspect area
for corrosion, cracks, and fuel leaks. Check wiring and plumbing
for security and condition.
g. Inspect aft passenger rear bulkhead for indication of
screw contact or cracks in area of hat bin attachment anchor
nuts.
2. Inspect aft passenger rear bulkhead for distortion in area of
hat bin attachment anchor nuts.
DRIVETRAIN
1. Examine forward short shaft (steel) splined adapters for
excessive wear and lubricate.
2. Using dye penetrant methods, inspect oil cooler blower
impeller 206-061-432-031 for cracks. Give particular attention to
the mounting flange where individual blades attach.
TAIL ROTOR DRIVESHAFT
1. Lubricate oil cooler blower and tail rotor driveshaft hanger
bearings and check for evidence of overheating.
2. Examine and lubricate aft short shaft (aluminum) and aft
tail rotor driveshaft splined adapters.
INITIAL
MECH OTHER
ECCN EAR99