SDR UALA2012070203523

Service difficulty report · Connector · Boeing 777222

Difficulty date: July 1, 2012
Submitted: July 3, 2012
Operation: Air carrier
Aircraft: N768UA
Make and model: Boeing 777222
Aircraft serial: 26919
Aircraft time: 70,563 hours, 12,628 cycles
Engine: Pwa PW4077
System (JASC): 7597 · Engine Bleed Air System Wiring
Part: Connector
Condition: Defective
Location: Engine Cooling
Stage of operation: NR
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

TURB CASE COOL HPT L LEFT ENGINE HIGH PRESSURE TURBINE (HPT) CASE COOLING ACTUATOR IS STUCK OR REVERTED TO ITS FAILSAFE POSITION. ITEM ROLLED FORWARD. MSG-7550681 INACTV DC INTER MSG-7560661 ACTIVE DC HARD MSG-7550661 INACTV DC MODE MSG-7550661 INACTV DC MODE MSG-7560681 INACTV ER INTER IAW MEL 7524J. WIRES IN ELECTRICAL CONNECTOR DM 75004 HAVE BEEN MOVED IN ACCORDANCE WITH MEL 75020 MAINTENANCE INSTRUCTIONS & MUST BE REPLACED WHEN HPT TURBINE CASE COOLING SYSTEM IS REPAIRED.