Effective immediately with FAA Order N8900.491 and no later than June 30, 2019, the Federal Aviation Administration has decommissioned OpSpec/MSpec/LOA A153 & A353 for ABS-B Out Operations. The measure discards requirements for ADS-B Out operational approval and removes the administrative burden on operators needing to apply for and maintain the OpSpec/MSpec/LOA for ABS-B Out Operations.
Regulators at the FAA could find no State, worldwide, that continues to require an operator to carry a State of Registry operational approval. Furthermore, they found there to be no safety or operational benefit to issuing and maintaining the OpSpec/MSpec/LOAs A153 & A353. Airworthiness approval and certification for the installed ABS-B Out equipment will continue to be required and expected to meet the ICAO standards. Operational approval, specific training, and procedures for ADS-B In operations will still be required. Nothing has changed for ADS-B In, as the United States along with other State regulating agencies will continue to require it.
Remember, after January 1, 2020, only aircraft with ADS-B Out systems that meet the equipment requirements specified in § 91.227 will be authorized to operate in the airspace specified in § 91.225 (The U.S. NAS) unless otherwise authorized by ATC, but now no operational approval will be required. ADS-B out guidance for installation and operations can be found in AC 90-114a chg 1. Many countries are now publishing mandates for ADS-B Out carriage in their airspace; equipment and airspace requirements do vary and it is important to pay attention to those differences.
What this means for us?