Chapter 6 - Bell 206L4 Maintenance Manual

BHT-206L4-MM-1
5-55. ENGINE COMPRESSOR STALL OR SURGE (CONT)
DATA REFERENCE

Chapter 62

Chapter 64
BHT-206L-CR&O
Chapter 62
5-00-00
Page 170 Rev. 13 25 FEB 2011
CONDITIONAL INSPECTIONS
INSPECTION TASK DESCRIPTION
10. If no defects were detected that may have been caused by
the compressor stall or surge, all drivetrain components are
serviceable.
ROTATING CONTROL SYSTEM
1. Examine the swashplate
swashplate drive components, the tail rotor pitch change
mechanism, and all rotating controls (main and tail). Replace
any unserviceable parts as necessary.
TAIL ROTOR HUB AND BLADES
1. Examine the tail rotor hub assembly for condition. If any
damage suspected to be related to the stall or surge is found,
remove the tail rotor hub assembly. Make an entry on the
Historical Service Record and attach a tag on the tail rotor hub
assembly and write, "THIS COMPONENT WAS REMOVED
FROM SERVICE BECAUSE OF A COMPRESSOR STALL OR
SURGE". Send the hub to an approved facility for overhaul.
2. Examine the tail rotor blade(s) for condition. If any damage
suspected to be related to the stall or surge is found, remove the
tail rotor blade(s). Make an entry on the Historical Service
Record and attach a tag on the tail rotor blade(s) and write
"THIS BLADE WAS REMOVED FROM SERVICE BECAUSE
OF A COMPRESSOR STALL OR SURGE". Send the tail rotor
blade(s) assembly to a Bell Helicopter Textron approved rotor
blade repair facility for further inspection and repair.
3. Examine the tail rotor blade bolts for security of
attachment. If damage suspected to be related to the stall or
surge is found, discard them.
4. If any defect is detected in step 1 through step 3, all
bonded tail rotor driveshafts shall be considered unserviceable
and discarded.
MAIN ROTOR HUB AND BLADES
1. Examine the main rotor blades for damage. Check for
wrinkled skin, delamination, deformation, and cracks.
and support assembly,
INITIAL
MECH OTHER
ECCN EAR99