Service difficulty report · Thermal Shield · Boeing 7673P6

Difficulty date
January 29, 1998
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N154DL
Make and model
Boeing 7673P6
Aircraft serial
25241
Engine
Ge CF680C2B2
Part
Thermal Shield
Part number
9315M41P20
Condition
Cracked
Location
Nr 2 Engine
Part time
23,873 hours
Stage of operation
IN
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

SHOP FINDINGS - NO FLIGHT INCIDENT. DURING OVERHAUL OF ENGINE 695373, THE HPT THERMAL SHIELD WAS FOUND TO HAVE A FLANGE TO FLANGE CRACK. THIS PART PROVIDES THE ROTATING SEAL BETWEEN THE T1 AND T2 DISK. THE THERMAL SHIELD IS NOT LIFE LIMITED. DUE TO THE CRACK, THE T1 AND T2 DISK WERE SCRAPPED BASED ON GE RECOMMENDATION.

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