What was found
(CAN) WHILE CONDUCTING A SECTOR SEARCH ON A SAR FLIGHT, THE PILOT FOUND IT DIFFICULT TO MANAGE THE FLIGHT PATTERN REQUESTED BY JRCC. CONSTANT RESET OF THE HEADING DUE TO EXCESSIVE DRIFT (MORE THAN 20 DEGREES PER 2 TURNS OR APPROX. 4 MINUTES), MADE THE PATTERN VERY APPROXIMATE. MANIPULATION OF THE HEADING MODE ON AND OFF FOR PROPER HEADING RESET WHILE COUPLED AT THIS RATE WAS NOT POSSIBLE WITHOUT DRASTICALLY REDUCING THE PILOT`S ATTENTION OUTSIDE OF THE COCKPIT. (TC# 20190703014)