Service difficulty report · Combustion Liner · Bell 407

Difficulty date
October 30, 2006
Submitted
December 4, 2006
Operation
General aviation
Make and model
Bell 407
Aircraft time
4,894 hours
Engine
Allsn 250C47B
Part
Combustion Liner
Part number
23064570B
Condition
Cracked
Location
Engine
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) COMBUSTION LINER FOUND CRACKED ON REMOVAL DURING TURBINE SECTION REPLACEMENT TO COMPLY WITH ROLLS ROYCE CEB A-72-6060. THIS PART IS FOUND TO BE CRACKED ANY TIME IT IS REMOVED AFTER ANY LENGTH OF TIME IN SERVICE. MANUFACTURERS MAINTENANCE MANUAL ALLOWS NO CRACKS IN THIS AREA.

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