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We Are Here to Support You with the A056 Data Link Authorization Process

Sep 20, 2018
Amanda Grizzard, Field Service Engineer

The Federal Aviation Administration (FAA) has issued a compliance guide to aid operators in submitting the required content for an A056 data link authorization. A copy of the guide is available on the FAA's website.

New applicants, operators with a current A056 who are upgrading data link operations capabilities, operators who need to obtain a revised A056, and operators with a current A056 who need to add identically equipped aircraft can benefit from following the guidelines outlined in this document.

UA Support

UA Report No. RPRT-10123 (software SCN 30.X) and RPRT-10120 (software SCN 31.X) are available to assist aircraft operators using the UA UniLink™ UL-800 and UL-801 Communications Management Units (CMU).

The reports include compliance statements required for A056, Table 2: Aircraft Eligibility Summary for SOC-1, SOC-2, SOC-3, EQP-1, EQP-2, EQP-3, EQP-4, EQP-5, and EQP-6. Using these UniLink A056 compliance guides will further simplify efforts in submitting for new and revised operational authorization.

For more information, refer to UA Service Letter (SL) No. 2887 and No. 2888, available on UniNet. UA's Customer Support team is also available for additional assistance.


Operation Specification (OpSpec)/ Management Specification (MSpec)/Letter of Authorization (LOA) A056 was revised with the release of Notice N 8900.446. Originally, the mandatory revision to A056 held a compliance date of March 29, 2018. This deadline now extends to September 30, 2018 for Part 91 operators.

Additional Resources

FAA Advisory Circular (AC) 90-117 provides guidance for aircraft eligibility and operational use of data link communications in the United States and in oceanic and remote continental airspace. It applies to operators under 14 Code of Federal Regulations (CFR) Part 91, 91 Subpart K (Part 91K), 121, 125, 129, and 135 conducting data link communications operations in this airspace, noting that Part 91 operators do not require operational authorization for the use of data link in the United States. This AC cancels AC 120-70C, Operational Authorization Process for Use of Data Link Communication System. A copy of AC 90-117 is available on the FAA's website.

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