AD 2021-05-17
Unsafe Condition
a conflict between the traffic collision avoidance system (TCAS) primary display indications and aural alerts during a resolution advisory (RA) scenario
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Required Actions
Revise the Limitations section of the AFM or AFMS, fabricate and install a placard on each aircraft primary flight display, and upgrade the FDSA-6500 software within 12 months
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Compliance Time
Within 12 months of effective date
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Affected Aircraft
Rockwell Collins, Inc., Flight Display System Application FDSA-6500 part numbers (P/Ns) 810-0234-1H0001, 810-0234-1H0002, 810-0234-1H0003, 810-0234-2H0001, 810-0234-2C0001, 810-0234-2C0002, and 810-0234-4B0001, installed on, but not limited to, Bombardier Inc. Model CL-600-2B16 (604 variant) airplanes and Textron Aviation Inc. Models 525B, B200, B200C, B200CGT, B200GT, B300, B300C, and C90GTi airplanes, certificated in any category
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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