What was found
AFTER CRUISING AT FL360 FOR APPROX. 90 MINUTES, UPON BEING CLEARED FOR DESCENT LEFT THROTTLE STUCK @ 97.0 N1, THROTTLE WOULD NOT BUDGE. FINALLY OUT OF FL240 IT CAME FREE & OPERATED NORMALLY. TEMP WAS -10 RAT. REMOVED OLD SEALS REPLACED WTH NEW. LUBED TELESCOPING ROD, RESECURED OPS CHECK GOOD. I/A/W RAYTHEON COMMUNIQUE NR 45