UACN01 CYXJ 271814 EG UUA /OV YXJ 360030 1816 FL 350 /TP MD11 /TB MDT-SVR /RM MDT-SVR TURBC WESTBOUND STARTING 30N YXJ FOR 40NM. "SVR MTN WAVE, ACFT AIRSPEED FLUCTUATING BY 200 - 300 KTS, DIFFICULTY HOLDING ALTITUDE" /TEG FSS/