SDR UALA2011053102662

Service difficulty report · Duct · Boeing 777222

Difficulty date: May 30, 2011
Submitted: June 22, 2011
Operation: Air carrier
Aircraft: N223UA
Make and model: Boeing 777222
Aircraft serial: 30224
Aircraft time: 41,486 hours, 5,082 cycles
Engine: Pwa PW40903
Engine time: 3,200 hours, 18,567 cycles
System (JASC): 7520 · Engine Cooling System
Part: Duct
Condition: Cracked
Location: Nr 1 Engine
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

NR 1 ENGINE, TURBINE CASE COOLING DUCT HAS A HOLE IN IT AND IS CRACKED. DUCT IS LOCATED ABOVE LOW PRESSURE TURBINE CASE COOLING VALVE. DUCT IS LOCATED ON RT SIDE OF ENGINE AND IS ALSO ABOVE THE TURBINE CASE COOLING HPT AIR VALVE. REMOVED TURBINE CASE COOLING DUCT. REPLACED NR 1 ENGINE TURBINE CASE COOLING DUCT.