SDR UALA2012042302426

Service difficulty report · Line · Boeing 777222

Difficulty date: April 21, 2012
Submitted: May 25, 2012
Operation: Air carrier
Aircraft: N787UA
Make and model: Boeing 777222
Aircraft serial: 26939
Aircraft time: 65,882 hours, 9,621 cycles
Engine: Pwa PW40903
System (JASC): 8011 · Engine Starter
Part: Line
Condition: Broken
Location: Lt 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

CREW REPORTED LEFT ENGINE START VALVE DID NOT OPEN ON FIRST TWO START ATTEMPTS. CREW CYCLED CB B01 FOR LEFT START VALVE. START VALVE STILL NOT OPENING. OPENED FAN COWLS & FOUND SENSE LINE BROKEN ON START VALVE. MAINTENANCE FOUND ENGINE START VALVE SENSE LINE BROKEN AT START VALVE. SENSE LINE WAS WELDED & REINSTALLED, AND ENGINE WAS MAX MOTORED TWICE PER ECRA 8011-01061. VALVE SENSE LINE MUST BE REPLACED WITHIN 2 FLT CYCLES. REPLACED LINE.