Originally Posted by Near Miss
Yes HT's, but "de-rated" to GT's for performance calculations. That's my understanding.
Your understanding is correct.
The airplane is powered by four Rolls Royce RB211-524H-T engines, each rated to the -524G engine rating of 58,000 pounds takeoff thrust.(FCOM 1)
Includes the -400Fs as well.
Mayday.