Airlines growing use of VHF Data Link Mode 2 (VDL2) has offered a reliable sub network for CPDLC. Future Air Navigations System (FANS-1/A+) has removed the risk of “out-of-date” messages and Aeronautical Telecommunications Network (ATN) Protected Mode CPDLC has eliminated the risk of “misdelivered” messages. But among other deficiencies to comply with ICAO ATN Standards and Recommended Practices (SARPs), FANS protocol is still vulnerable to this risk, eventually posing a safety threat in continental high-density airspace when voice read-back is removed. Considering the lack of technical solutions to this FANS misdelivery risk, IFATCA opposes the use of CPDLC with FANS aircraft in continental airspace and requests ATN CPDLC only in high density airspace, and ultimately FANS replacement by ATN data link in oceanic airspace when ICAO ATN SARPs are upgraded.