Textron Bell 206A Series, Maintenance Manual

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BHT-206A/B-SERIES-MM-1
5-00-00
Page 188
Rev. 14 30 APR 2013 Export Classification C, ECCN EAR99
SPECIAL INSPECTION
After 25 hours of operation, examine chip detectors of
transmission, freewheel assembly, and tail rotor gearbox. If the
chip detector shows signs of metal particles, perform a
serviceability check. Components that fail the serviceability
check shall be removed. Make an entry on the applicable
components Historical Service Record, and attach a tag and
write “THIS COMPONENT WAS REMOVED FROM SERVICE
BECAUSE OF A COMPRESSOR STALL/SURGE”. Send the
component to a Bell Helicopter Textron approved facility for
overhaul.
PART III: INSPECTION FOR COMPRESSOR STALL
OR SURGE WITH NOTICEABLE YAW
CAUTION
WHEN A COMPRESSOR STALL OR SURGE WITH
NOTICEABLE YAW HAS OCCURRED, DISCARD
ALL TAIL ROTOR BONDED DRIVESHAFTS.
BHT-206B3-CR&O ENGINE-TO-TRANSMISSION DRIVESHAFT
1. Remove and disassemble the engine-to-transmission
driveshaft for condition.
2. Inspect the inner and outer coupling teeth splines for
damage.
3. If any damage suspected to be related to the compressor
stall or surge is found, make an entry on the Historical Service
Record, and attach a tag on the driveshaft and write “THIS
COMPONENT WAS REMOVED FROM SERVICE BECAUSE
OF A COMPRESSOR STALL/SURGE”. Send the
engine-to-transmission driveshaft to a Bell Helicopter Textron
approved facility for overhaul.
4. If no defects were detected, return the
engine-to-transmission driveshaft to service.
CONDITIONAL INSPECTIONS
5-57. ENGINE COMPRESSOR STALL OR SURGE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER