Kawak Aviation has received FAA Supplemental Type Certification (STC) for its CH-47D Chinook aerial liquid delivery system (ALDS) and auxiliary hydraulic system. Working with customer Billings Flying Service of Billings, Montana, Kawak has achieved a more effective internal tank firefighting system. The 2,500-US gallon (9,463-liter) tank fills in under 40 seconds and can release a full load of water in 3 seconds. The key to the success of this new system is the fully independ