As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GE DIAGNOSTICS REPORTS THE #2 ENGINE TREND DATA SHOWS A SUDDEN SHIFT IN DEGT, D CORE AND DFFHPTACCV IS MOST LIKELY CAUSE OF SHIFT. NO EXTENSION ALLOWED(#PRI: 2)ETOPS SIGNIFICANT SYSTEM. GROUNDED - YES. (RESOLVED ON W/O: 1882672 TASKCARD: N/R-00001 ) REMOVED AND REPLACED ENG #2 HPTACC REF B737-900 AMM 75-21-01. PERFORMED LEAK CHECKS, NO LEAKS REF AMM 71-00-00 TESA 3A. PERFORMED T/R TEST, NO DEFECTS REF AMM 75-21-01. SEAMC FELIX NOTIFED.