SDR 2001UALA01599

Service difficulty report · Tube · Boeing 777222

Difficulty date: August 2, 2001
Submitted: August 14, 2001
Operation: Air carrier
Aircraft: N221UA
Make and model: Boeing 777222
Aircraft serial: 30552
Aircraft time: 380 hours, 45 cycles
Engine: Pwa PW4090
Engine time: 380 hours, 45 cycles
System (JASC): 7261 · Turbine Engine Oil System
Part: Tube
Part number: 50J04101
Condition: Cracked
Location: Rt Engine
Part time: 380 hours, 45 cycles
Stage of operation: IN
How discovered: V
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

UNSCHEDULED ENGINE REMOVAL DUE TO CRACK IN NR 3 BEARING OIL PRESSURE TUBE FOUND DURING INSPECTION. PRATT & WHITNEY RECALLED CERTAIN P/N 50J041-01 OIL TUBES DUE TO POTENTIAL CRACKING AT CONTAMINATED WELD BEAD, AND NOTIFIED US OF THE POSSIBILITY THAT NR 3 BEARING OIL PRESSURE TUBES SUBJECT TO RECALL MAY HAVE BEEN INSTALLED AT MANUFACTURE OF BOTH ENGINES ON AIRPLANE N221UA. ENGINES WERE INSPECTED PER P&W SI 76F-01. THE LEFT ENGINE PASSED, BUT A CRACKED TUBE WAS FOUND IN THE RIGHT ENGINE. THE ENGINE WAS REMOVED AND SENT TO P&W.