SDR ASMF201005001

Service difficulty report · Shroud · Boeing 737705

Difficulty date: May 14, 2010
Submitted: May 17, 2010
Operation: Air carrier
Aircraft: N788XA
Make and model: Boeing 737705
Aircraft serial: 33788
Aircraft time: 20,289 hours, 10,019 cycles
Engine: Cfmint CFM567B22
Engine time: 17,955 hours, 8,912 cycles
System (JASC): 7230 · Turbine Engine Compressor Section
Part: Shroud
Condition: Grooved
Location: Lt Engine
Part time: 17,955 hours, 8,912 cycles
Stage of operation: IN
How discovered: 9
Nature of condition: C
Precautionary procedure: K

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

What was found

DURING THE MX INSP, AFTER THE LAST FLIGHT OF THE DAY, IT WAS DETECTED IN THE LT ENGINE, THE FAN BLADES WITH PLASTIC BAG REMAIN. MX PERFORMED A FOD INSP IAW MM TASK 71-00-00-800-802-F00, DETECTING A GROOVE 1.125 INCHES WIDE ON 360 DEGREES OF ABRADABLE SHROUD. THE FAN BLADES WERE CLEANED AND LUBRICATED IAW MM 72-21-02. ADDITIONALLY, THE NRC A0163724 WAS GENERATED FOR REPAIR THE ABRADABLE SHROUD, LIMITED TO 50 CYCLES TO PERFORM THE REPAIR IAW MM 71-00-00. THE FINAL REPAIR DETAILS WILL BE PROVIDED AS A SUPPLEMENT.