y !or significant changes in FAA Order 8110.48. ihe Certification basis for the Sikorsky 5-75A/B/C is as folows a. The type certification basis for Sikorsky 546ASIC is shawl On TCDS N7 NE for pans not changed 0rib:staffer-led by the change b. The cedification basis for pans changed or affected by the change sin