FAQ n.115363

How do I demonstrate my aircraft’s compliance with the DLS IR?


One means to demonstrate compliance with the DLS IR is to have evidence that the aircraft design is compliant with CS-ACNS (Certification Specifications and acceptance means of compliance - Airborne Communications, Navigation and Surveillance). 
Such evidence of compliance can  normally be found in the Airplane Flight Manual (AFM)

CS-ACNS is a means, however not the only means to comply with the DLS IR. 

If there is no relevant statement in the AFM, operators should check with the type certificate holders (TCHs) or the supplemental type certificate holders (STCHs) as to the CPDLC installation compliance details.

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