SDR UALA2010092903609

Service difficulty report · Guide Vane · Boeing 777222

Difficulty date: September 28, 2010
Submitted: October 22, 2010
Operation: Air carrier
Aircraft: N768UA
Make and model: Boeing 777222
Aircraft serial: 26919
Aircraft time: 62,921 hours, 11,491 cycles
Engine: Pwa PW4077
Engine time: 51,256 hours, 9,946 cycles
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Guide Vane
Condition: Cracked
Location: Nr 1 Engine
Part time: 51,256 hours, 9,946 cycles
Stage of operation: NR
How discovered: 9
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

ENG FAILED DUE TO NGV WITH BURN THROUGH IN THE OUTER PLATFORM RADIUS. HPT STG 1 NGV AFT OF THE IGNITORS. NGV HAS 2 EA CRACKS INTO THE PLATFORM RADIUS WITH BURN THROUGH IN THE RADIUS OF THE AFT CRACK. THERE IS A INTERSECTING CRACK (AXIALY) WITH BURN THROUGH. REPLACED ENGINE.