SR02599SEOther aircraft modifications
Installation of a Kawak Aviation Technologies Model 41300 auxiliary hydraulic system.
FAA holder: Kawak Aviation Technologies, Inc.
Aircraft STC directory
Billings Flying Service CH-47D STCs
The Jun 30, 2026 FAA DRS snapshot contains 5 selected supplemental type certificates with status Current whose public applicability data names the Billings Flying Service CH-47D. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.
5
listed Current at snapshot
2
holder directories
2
modification categories
Mar 30, 2026
latest recorded revision
Modification demand surface
Other aircraft modifications4
Rotorcraft modifications1
Recently revised CH-47D STCs
Showing the 5 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.
View record
SR01136DEOther aircraft modifications
Installation of Night Vision Imaging System (NVIS) / Night Vision Goggles (NVG) Compatible Lighting System.
FAA holder: Billings Flying Service
SR00788DERotorcraft modifications
Installation of Bubble Windows on BFS CH-47D Chinook Rotorcraft for Left and Right sides of the Pilot and Co-Pilot doors respectively.
FAA holder: Billings Flying Service Inc.
SR02598SEOther aircraft modifications
Installation of a Kawak Aviation Technologies Model 41400 aerial liquid dispensing system.
FAA holder: Kawak Aviation Technologies Inc
SR02510SEOther aircraft modifications
Installation of a Supplemental Lighting System.
FAA holder: Aviation Specialties Unlimited Inc.