FAAC 'Em Up!
Whoever named the Oceanykan Federation's Federal Army Air Corps (FAAC) clearly knew the value of propaganda. When the Oceanykan Civil War broke out, and particularly when the Japanese invaded, the FAAC became synonymous with rudely expressed defiance. Whenever an aircraft with this rule has below 50% RES, it can reroll a single dice roll of any kind per turn.
Hardy Lil' Bugger
The Wirraway was designed with Oceanyka's harsh conditions in mind; though it was inferior to contemporary Japanese designs in most technical aspects, it could fly through typhoons and tropical storms unscathed. Perhaps it wasn't the aircraft itself, but rather its pilots, either too brave or too stupid to turn back to base. The CAC Wirraway is unaffected by adverse weather when flying.