SDR 98ZZZX725

Service difficulty report · Shaft

Difficulty date
January 7, 1998
Submitted
March 26, 2000
Operation
General aviation
Filed by
NM1Y353K
Safran Aircraft Engines
Engine
Ge CFM56*
Part
Shaft
Condition
Misheat Treat
Location
Turbine
Stage of operation
IN
Nature of condition
W
Precautionary procedure
K

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

What was found

QUALITY AUDIT FOUND CFM TURBINE SHAFTS WITH A POSSIBLE DEFECT DUE TO HYDROGEN OUTGASSING HEAT TREATMENT HAD BEEN OMITTED.