For the rest of 1937 and the winter months of early 1938, "Aylwin" maintained what had become standard routine, alternating periods in port for upkeep with time training at sea in the southern California operating area. From 6 to 9 January 1938, she participated in the search for a lost patrol plane from Patrol Squadron 7 (VP-7). After firing antiaircraft practices in early February, the ship proceeded to the Destroyer Base, San Diego, for her yearly hull inspection in the floating drydock USS ARD-1 and then proceeded to the Mare Island Navy Yard for a brief overhaul.