"Two motors burnt out" : Get your facts straight : overtemp for a matter of seconds causes an inspection. Cheaper to replace the ENGINE with the spare and check it out/rebuild out of the aircraft.
have a look in the latest flight safety.....
"TURBINE ENGINES
GE CT79B engine over-temperature. Ref 510007363
LH and RH engines both exceded ITT limits. LH engine 999 degrees C for 38 seconds. Investigation found some signs of heat stress on the No.1 stage nozzle. RH engine 979.5 degrees C for 12 seconds. Nil evidence of heat stress to No.1 stage nozzle. Over-temperature occured during icing conditions. Both engines removed for inspection."