BHT-206A/B-SERIES-MM-1
5-00-00
30 APR 2013 Rev. 14 Page 185
Export Classification C, ECCN EAR99
Removal or dismantling of components is not
required while performing the following inspection.
PART II: INSPECTION FOR COMPRESSOR STALL OR
SURGE WITHOUT NOTICEABLE YAW
Chapter 63 and
Chapter 65
DRIVE SYSTEM
1. Examine the chip detectors of the transmission, freewheel
assembly, and the 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 an approved facility for
overhaul.
2. Examine the tail rotor driveshafts for condition and security
of attachment.
3. Examine the tail rotor disc pack couplings for cracks or
gapping greater than 0.015 inch (0.38 mm).
4. Examine the tail rotor steel driveshaft and adapters for
structural failure or distortion exceeding specified limits.
5. Examine the bondlines between adapters and tube of the
long tail rotor driveshaft for any evidence of cracks and voids, if
installed.
6. Examine the bondlines on all bonded tail rotor driveshaft
adapters for any evidence of cracks and voids, if installed.
7. If any defect is detected in step 2 through step 6, all
bonded tail rotor driveshafts shall be considered unserviceable
and scrapped.
8. Examine the tail rotor driveshaft segments having riveted
adapters for condition, if installed.
5-57. ENGINE COMPRESSOR STALL OR SURGE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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