What was found
APPROX 30 MIN INTO FLIGHT, CREW NOTICED AN EXCEEDENCE OF 650 ON THE R EGT GAUGE. UNKOWN OF WHEN IT OCCURRED OR FOR HOW LONG. ENGINE OPERATES NORMALLY. NO OTHER ABNORMALITIES NOTED. IAW MM 72-00-00-6 AND MM 71-00-00-5, ALL REQUIRED CHECKS PERFORMED ON RT ENG PW 2040. EICAS EXCEED PG RT EG 650 DEG 19 SEC. RT ENG EFT REF 645 18. 615: 1827 MIN 650. ALL PARAMETERS FULL WITHIN SECT A OF ABOVE MENTIONED MM 72-00-00-6.